A blister is a small pocket of body fluid ( lymph , serum , plasma , blood , or pus ) within the upper layers of the skin , usually caused by forceful rubbing ( friction ), burning, freezing, chemical exposure or infection. Most blisters are filled with a clear fluid, either serum or plasma. However, blisters can be filled with blood (known as " blood blisters ") or with pus (for instance, if they become infected).
95-621: The word "blister" entered English in the 14th century. It came from the Middle Dutch bluyster and was a modification of the Old French blostre , which meant a leprous nodule—a rise in the skin due to leprosy . In dermatology today, the words vesicle and bulla refer to blisters of smaller or greater size, respectively. To heal properly, a blister should not be popped unless medically necessary. If popped, bacteria can enter. The excess skin should not be removed because
190-440: A blister, as can any friction on the skin if continued long enough. This kind of blister is most common after walking long distances or by wearing old or poorly fitting shoes. Blisters are most common on the hands and feet, as these extremities are susceptible while walking, running, or performing repetitive motions, such as joystick manipulation whilst playing certain video games, certain sports (e.g., baseball pitching), digging with
285-418: A certain ruler also created a sphere of linguistic influence, with the language within the area becoming more homogeneous. Following, more or less, the political divisions of the time, several large dialect groups can be distinguished. However, the borders between them were not strong, and a dialect continuum existed between them, with spoken varieties near the edges of each dialect area showing more features of
380-399: A higher degree, the hands of other primates are anatomically similar and the dexterity of the human hand can not be explained solely on anatomical factors. The neural machinery underlying hand movements is a major contributing factor; primates have evolved direct connections between neurons in cortical motor areas and spinal motoneurons , giving the cerebral cortex monosynaptic control over
475-519: A labial or velar consonant. Some former class 1 weak verbs retained so-called Rückumlaut . These verbs had undergone umlaut in the present tense, but the umlaut-triggering vowel was syncopated in the past tense already in Old Dutch, preventing umlaut from taking hold there. Thus, senden had the first- and third-person singular past tense sande . These verbs tended to be reinterpreted as strong verbs in later Middle Dutch; sande itself gave rise to
570-523: A pencil—reflects individual brain functioning. Among humans, the hands play an important function in body language and sign language . Likewise, the ten digits of two hands and the twelve phalanges of four fingers (touchable by the thumb) have given rise to number systems and calculation techniques. Many mammals and other animals have grasping appendages similar in form to a hand such as paws , claws , and talons, but these are not scientifically considered to be grasping hands. The scientific use of
665-399: A primitive trait, while the palms of other extant higher primates are elongated to the extent that some of the thumb's original function has been lost (most notably in highly arboreal primates such as the spider monkey ). In humans, the big toe is thus more derived than the thumb. There is a hypothesis suggesting the form of the modern human hand is especially conducive to the formation of
760-417: A shovel, playing guitar or bass, etc. Blisters form more easily on damp skin than on dry or soaked skin, and are more common in warm conditions. Less-aggressive rubbing over long periods of time may cause calluses to form rather than a blister. Both blisters and calluses can lead to more serious complications, such as foot ulceration and infection, particularly when sensation or circulation is impaired, as in
855-427: A transitional element to the fifth metacarpal. Together with the thumb, the four fingers form four oblique arches, of which the arch of the index finger functionally is the most important, especially for precision grip, while the arch of the little finger contribute an important locking mechanism for power grip. The thumb is undoubtedly the "master digit" of the hand, giving value to all the other fingers. Together with
950-487: A variety of ways. Blisters on the feet can be prevented by wearing comfortable, well-fitting shoes and clean socks. Inherently ill-fitting or stiffer shoes, such as high heels and dress shoes, present a larger risk of blistering. Blisters are more likely to develop on skin that is moist, so socks that manage moisture or frequent sock changes will aid those with particularly sweaty feet. While exercising or playing sports, special sports socks can help keep feet drier and reduce
1045-433: A word could be found spelled differently in different occurrences within the same text. There was the matter of personal taste, and many writers thought it was more aesthetic to follow French or Latin practice, leading to sometimes rather unusual spellings. The spelling was generally phonetic, and words were written based on how they were spoken rather than based on underlying phonemes or morphology. Final-obstruent devoicing
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#17327826612491140-554: Is mustard gas . A blood blister usually forms when a minute blood vessel close to the surface of the skin ruptures (breaks), and blood leaks into a tear between the layers of skin. This can happen if the skin is crushed, pinched or aggressively squeezed. There are also a number of medical conditions that cause blisters. The most common are chickenpox , herpes , impetigo , and a form of eczema called dyshidrosis . Other, much rarer conditions that cause blisters include: Friction blisters are caused by excess shear stress between
1235-482: Is a rather conservative language. Several phonological changes occurred leading up to the Middle Dutch period. The consonants of Middle Dutch differed little from those of Old Dutch. The most prominent change is the loss of dental fricatives. In addition the sound [z] was phonemicised during this period, judging from loanwords that retain [s] to this day. For descriptions of the sounds and definitions of
1330-474: Is located on one of the sides, parallel to the arm. A reliable way of identifying human hands is from the presence of opposable thumbs. Opposable thumbs are identified by the ability to be brought opposite to the fingers, a muscle action known as opposition. The skeleton of the human hand consists of 27 bones: the eight short carpal bones of the wrist are organized into a proximal row ( scaphoid , lunate , triquetral and pisiform ) which articulates with
1425-408: Is supplemented by the precision grip between the thumb and the distal finger pads made possible by the opposable thumbs. Hominidae (great apes including humans) acquired an erect bipedal posture about 3.6 million years ago , which freed the hands from the task of locomotion and paved the way for the precision and range of motion in human hands. Functional analyses of the features unique to
1520-497: Is to the neck of a metacarpal. One can also have a broken finger . The prehensile hands and feet of primates evolved from the mobile hands of semi- arboreal tree shrews that lived about 60 million years ago . This development has been accompanied by important changes in the brain and the relocation of the eyes to the front of the face, together allowing the muscle control and stereoscopic vision necessary for controlled grasping. This grasping, also known as power grip,
1615-507: Is unclear. The following can be said: The vowels /eɛ̯/ , /øœ̯/ and /oɔ̯/ , termed "sharp-long" and denoted with a circumflex ê ô , developed from Old Dutch long vowels. The opening diphthong pronunciation was probably widespread, and perhaps once universal, as it is nowadays still found in both West Flemish and in Limburgish, at opposite ends of the Middle Dutch language area. In the general area in between, including standard Dutch,
1710-505: Is usually described as having "hands" though opposable thumbs are lacking. Some evolutionary anatomists use the term hand to refer to the appendage of digits on the forelimb more generally—for example, in the context of whether the three digits of the bird hand involved the same homologous loss of two digits as in the dinosaur hand. The human hand usually has five digits: four fingers plus one thumb ; these are often referred to collectively as five fingers , however, whereby
1805-473: The carpal tunnel and contribute to the deep and superficial palmar arches . Several muscle tendons attaching to the TCL and the distal carpals also contribute to maintaining the carpal arch. Compared to the carpal arches, the arch formed by the distal ends of the metacarpal bones is flexible due to the mobility of the peripheral metacarpals (thumb and little finger). As these two metacarpals approach each other,
1900-600: The chimpanzee–human last common ancestor (CHLCA) and absent in modern humans are still present in the hands of Australopithecus , Paranthropus , and Homo floresiensis . This suggests that the derived changes in modern humans and Neanderthals did not evolve until 2.5 to 1.5 million years ago or after the appearance of the earliest Acheulian stone tools, and that these changes are associated with tool-related tasks beyond those observed in other hominins. The thumbs of Ardipithecus ramidus , an early hominin, are almost as robust as in humans, so this may be
1995-419: The dermis of palmoplantar skin inhibit melanin production and thus the ability to tan , and promote the thickening of the stratum lucidum and stratum corneum layers of the epidermis . All parts of the skin involved in grasping are covered by papillary ridges ( fingerprints ) acting as friction pads. In contrast, the hairy skin on the dorsal side is thin, soft, and pliable, so that the skin can recoil when
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#17327826612492090-523: The ulnar nerve may result in a condition in which some of the fingers cannot be flexed. A common fracture of the hand is a scaphoid fracture —a fracture of the scaphoid bone , one of the carpal bones. This is the commonest carpal bone fracture and can be slow to heal due to a limited blood flow to the bone. There are various types of fracture to the base of the thumb; these are known as Rolando fractures , Bennet's fracture , and Gamekeeper's thumb . Another common fracture, known as Boxer's fracture ,
2185-593: The 13th century. Its characteristics are: Hollandic was spoken in the County of Holland . It was less influential during most of the Middle Ages but became more so in the 16th century during the "Hollandic expansion", during which the Eighty Years' War took place in the south. It shows the following properties: Limburgish was spoken by the people in the provinces of modern Dutch and Belgian Limburg . It
2280-408: The Middle Dutch period. A new second person plural pronoun was created by contraction of gij/jij and lui ('people') forming gullie/jullie (literally, 'you people'). Note: There are several other forms. Definite Article ( die , dat = the) Middle Dutch mostly retained the Old Dutch verb system. Like all Germanic languages, it distinguished strong , weak and preterite-present verbs as
2375-624: The Old Dutch long ā , and "soft-long" ā being the result of lengthening. These two vowels were distinguished only in Limburgish and Low Rhenish at the eastern end, and in western Flemish and coastal Hollandic on the western end. The relative backness of the two vowels was opposite in the two areas that distinguished them. The closing diphthong /ɛi̯/ remained from the corresponding Old Dutch diphthong. It occurred primarily in umlauting environments, with /eɛ̯/ appearing otherwise. Some dialects, particularly further west, had /eɛ̯/ in all environments (thus cleene next to cleine ). Limburgish preserved
2470-402: The back of the hand), the deep palmar arch , and the superficial palmar arch . Together these three arches and their anastomoses provide oxygenated blood to the palm, the fingers, and the thumb. The hand is drained by the dorsal venous network of the hand with deoxygenated blood leaving the hand via the cephalic vein and the basilic vein . The glabrous (hairless) skin on the front of
2565-418: The bones of the forearm, and a distal row ( trapezium , trapezoid , capitate and hamate ), which articulates with the bases of the five metacarpal bones of the hand. The heads of the metacarpals will each in turn articulate with the bases of the proximal phalanx of the fingers and thumb. These articulations with the fingers are the metacarpophalangeal joints known as the knuckles. At the palmar aspect of
2660-399: The bottom and surface of the skin and the body. The strata of skin around the stratum spinosum are most susceptible to shear. As the stratum spinosum tears away from the connecting tissues below, plasma from the cells diffuses out. This plasma solution helps new cells divide and grow into new connective tissues and epidermal layers. The clear fluid will be reabsorbed as new cells develop and
2755-446: The case of diabetes , neuropathy or peripheral artery disease (PAD). This type of blistering is one of the tools used to determine the degree of burns sustained. First and second degree burns may result in blistered skin; however, it is characteristic of second degree burns to blister immediately, whereas first degree burns can have blisters after a couple of days. Sunburn can also result in blisters. Blisters can also form on
2850-415: The chance of blisters. Before going for a long walk, it is also important to ensure that shoes or hiking boots have been properly broken in. Even before a "hot" or irritated area on the foot is felt, taping a protective layer of padding or a friction-reducing interface between the affected area and the footwear can prevent the formation of a blister. Bandages, moleskin and tapes generally must be applied to
2945-413: The dative singular, a remnant of the late Old Dutch inflection. In some rare occasions, the genitive singular was also endingless. Some nouns ended in -e in the singular also; these were primarily former ja-stems, which were masculine or neuter. A few were former i-stems with short stems. Nouns of this type tended to be drawn into the weak inflection by analogy. The following table shows the inflection of
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3040-437: The densest areas of nerve endings in the body, and are the richest source of tactile feedback. They also have the greatest positioning capability of the body; thus, the sense of touch is intimately associated with hands. Like other paired organs (eyes, feet, legs) each hand is dominantly controlled by the opposing brain hemisphere , so that handedness —the preferred hand choice for single-handed activities such as writing with
3135-499: The diphthong wherever it was preserved in High German. The closing diphthong /ɔu̯/ has two different origins. In the vast majority of the Middle Dutch area, it developed through l-vocalization from older /ol/ and /al/ followed by a dental consonant. In the eastern area, Limburg in particular, it was a remnant of the older diphthong as in High German, which had developed into /oɔ̯/ elsewhere. L-vocalization occurred only in
3230-519: The disorders that can cause this is Catel-Manzke syndrome . The fingers may be fused in a disorder known as syndactyly . Or there may be an absence of one or more central fingers—a condition known as ectrodactyly . Additionally, some people are born without one or both hands ( amelia ). Hereditary multiple exostoses of the forearm—also known as hereditary multiple osteochondromas—is another cause of hand and forearm deformity in children and adults. There are several cutaneous conditions that can affect
3325-430: The distinction was mostly lost. Class 3, which retained a clear distinction that did not rely on vowel length, was levelled in favour of the o of the plural. In classes with a lengthened vowel in the present, the singular imperative often appears with a short vowel instead, e.g. les , drach . An alternative form, with final -e by analogy with the weak verbs, also occurs. The eastern dialects occasionally show i in
3420-447: The exact number varies between people: whereas a pair of sesamoid bones are found at virtually all thumb metacarpophalangeal joints, sesamoid bones are also common at the interphalangeal joint of the thumb (72.9%) and at the metacarpophalangeal joints of the little finger (82.5%) and the index finger (48%). In rare cases, sesamoid bones have been found in all the metacarpophalangeal joints and all distal interphalangeal joints except that of
3515-436: The exact phonetics are uncertain, and seemed to have differed by dialect. The overall system is clear, however, as almost all the vowels remain distinct in modern Limburgish: /iː/ , /iə̯/ , /eɛ̯/ , /eː/ and /aː/ appear in modern Limburgish as /iː/ , /eː/ , /iə̯/ , /æː/ and /aː/ respectively. The vowels /ie̯/ , /yø̯/ and /uo̯/ developed from Old Dutch opening diphthongs, but their exact character in Middle Dutch
3610-426: The fingers and toes". The ratio of the length of the index finger to the length of the ring finger in adults is affected by the level of exposure to male sex hormones of the embryo in utero . This digit ratio is below 1 for both sexes but it is lower in males than in females on average. A number of genetic disorders affect the hand. Polydactyly is the presence of more than the usual number of fingers. One of
3705-434: The fingers are stretched. On the dorsal side, the skin can be moved across the hand up to 3 cm (1.2 in); an important input the cutaneous mechanoreceptors . The web of the hand is a "fold of skin which connects the digits". These webs, located between each set of digits, are known as skin folds (interdigital folds or plica interdigitalis). They are defined as "one of the folds of skin, or rudimentary web, between
3800-417: The first metacarpophalangeal joints are small, almost spherical bones called the sesamoid bones. The fourteen phalanges make up the fingers and thumb, and are numbered I-V (thumb to little finger) when the hand is viewed from an anatomical position (palm up). The four fingers each consist of three phalanx bones: proximal, middle, and distal. The thumb only consists of a proximal and distal phalanx. Together with
3895-538: The foot daily, and most have a very high coefficient of friction (COF), but a friction-management patch applied to the shoe will remain in place much longer, throughout many changes of socks and insoles. This type of intervention may be used with footwear that is worn daily, with specialty shoes and boots like hockey skates, ice skates, inline skates, ski boots and cleats, or even with orthotic braces and splints. For periods of sustained use such as hiking and trail running, especially where water ingress or moisture build up in
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3990-454: The former ja-stems, had an -e even in the strong and copular form, e.g. die vrouwe is clein e "the lady is small". Middle Dutch pronouns differed little from their modern counterparts. The main differences were in the second person with the development of a T-V distinction . The second-person plural pronoun ghi slowly gained use as a respectful second-person singular form. The original singular pronoun du gradually fell out of use during
4085-401: The friction developed by the rubbing against the bars. To further reduce the occurrence one can tape the hands, and there are also a number of products on the market that claim to reduce the occurrence of blisters. These are all intended to be worn as a liner underneath a glove. The majority of these offerings simply add padding, and create a layer that reduces the coefficient of friction between
4180-418: The groove on the dorsum of inferior side of ulna. The hand is innervated by the radial , median , and ulnar nerves . The radial nerve supplies the finger extensors and the thumb abductor , thus the muscles that extends at the wrist and metacarpophalangeal joints (knuckles); and that abducts and extends the thumb. The median nerve supplies the flexors of the wrist and digits, the abductors and opponens of
4275-456: The hand including the nails . The autoimmune disease rheumatoid arthritis can affect the hand, particularly the joints of the fingers. Some conditions can be treated by hand surgery . These include carpal tunnel syndrome , a painful condition of the hand and fingers caused by compression of the median nerve , and Dupuytren's contracture , a condition in which fingers bend towards the palm and cannot be straightened. Similarly, injury to
4370-457: The hand of modern humans have shown that they are consistent with the stresses and requirements associated with the effective use of paleolithic stone tools. It is possible that the refinement of the bipedal posture in the earliest hominids evolved to facilitate the use of the trunk as leverage in accelerating the hand. While the human hand has unique anatomical features, including a longer thumb and fingers that can be controlled individually to
4465-448: The hand, that of the thumb is the most mobile (and the least longitudinal). While the ray formed by the little finger and its associated metacarpal bone still offers some mobility, the remaining rays are firmly rigid. The phalangeal joints of the index finger, however, offer some independence to its finger, due to the arrangement of its flexor and extension tendons. The carpal bones form two transversal rows, each forming an arch concave on
4560-400: The hand, the palm, is relatively thick and can be bent along the hand's flexure lines where the skin is tightly bound to the underlying tissue and bones. Compared to the rest of the body's skin, the hands' palms (as well as the soles of the feet ) are usually lighter—and even much lighter in dark-skinned individuals, compared to the other side of the hand. Indeed, genes specifically expressed in
4655-564: The hands and feet as a result of tissue damage incurred by frostbite . Sometimes, the skin will blister when it comes into contact with a cosmetic, detergent, solvent, or other chemical such as nickel sulfate , Balsam of Peru , or urushiol ( poison ivy , poison oak , poison sumac ). This is known as contact dermatitis . Blisters can also develop as a result of an allergic reaction to an insect bite or sting. Some chemical warfare agents, known as blister agents or vesicants, cause large, painful blisters wherever they contact skin; an example
4750-400: The hottest part of the day to avoid blisters from sunburn. Avoiding sunlight during midday is the best way to avoid blisters from sunburn. Protective gloves should be worn when handling detergents, cleaning products, solvents and other chemicals. Middle Dutch Middle Dutch is a collective name for a number of closely related West Germanic dialects whose ancestor was Old Dutch . It
4845-461: The human hand are plesiomorphic (shared by both ancestors and extant primate species); the elongated thumbs and short hands more closely resemble the hand proportions of Miocene apes than those of extant primates. Humans did not evolve from knuckle-walking apes, and chimpanzees and gorillas independently acquired elongated metacarpals as part of their adaptation to their modes of locomotion. Several primitive hand features most likely present in
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#17327826612494940-413: The human hand include: There are five digits attached to the hand, notably with a nail fixed to the end in place of the normal claw . The four fingers can be folded over the palm which allows the grasping of objects. Each finger, starting with the one closest to the thumb, has a colloquial name to distinguish it from the others: The thumb (connected to the first metacarpal bone and trapezium )
5035-413: The human hand, including pentadactyly (having five fingers), the hairless skin of the palm and fingers, and the os centrale found in human embryos, prosimians, and apes. Furthermore, the precursors of the intrinsic muscles of the hand are present in the earliest fishes, reflecting that the hand evolved from the pectoral fin and thus is much older than the arm in evolutionary terms. The proportions of
5130-450: The index and middle finger, it forms the dynamic tridactyl configuration responsible for most grips not requiring force. The ring and little fingers are more static, a reserve ready to interact with the palm when great force is needed. The muscles acting on the hand can be subdivided into two groups: the extrinsic and intrinsic muscle groups. The extrinsic muscle groups are the long flexors and extensors . They are called extrinsic because
5225-421: The index finger. For example, in some individuals, the ulnar nerve supplies the entire ring finger and the ulnar side of the middle finger, whilst, in others, the median nerve supplies the entire ring finger. The hand is supplied with blood from two arteries, the ulnar artery and the radial artery . These arteries form three arches over the dorsal and palmar aspects of the hand, the dorsal carpal arch (across
5320-480: The interlocking shapes of the carpal bones, and the wrist is therefore more stable in flexion than in extension. The distal carpal arch affects the function of the CMC joints and the hands, but not the function of the wrist or the proximal carpal arch. The ligaments that maintain the distal carpal arches are the transverse carpal ligament and the intercarpal ligaments (also oriented transversally). These ligaments also form
5415-524: The language. The general practice was to write long vowels with a single letter in an open syllable and with two letters in a closed syllable. Which two letters were used varied among texts. Some texts, especially those in the east, do not do so and write long vowels with a single letter in all cases (as is the predominant rule in modern German). Middle Dutch nouns inflected for number as well as case . The weakening of unstressed syllables merged many different Old Dutch classes of nominal declension. The result
5510-420: The long finger. The articulations are: The fixed and mobile parts of the hand adapt to various everyday tasks by forming bony arches: longitudinal arches (the rays formed by the finger bones and their associated metacarpal bones), transverse arches (formed by the carpal bones and distal ends of the metacarpal bones), and oblique arches (between the thumb and four fingers): Of the longitudinal arches or rays of
5605-481: The masculine noun dach "day", feminine dâet "deed" and neuter brôot "bread". Weak nouns were characterised by the ending -en throughout the plural. The singular ended in -e . The following table shows the inflection of the masculine noun bōge "bow, arc". Middle Dutch adjectives inflected according to the gender, case and number of the noun they modified. The Germanic distinction between strong and weak, or indefinite and definite inflection,
5700-486: The modern zond , mirroring strong class 3. Hand A hand is a prehensile , multi- fingered appendage located at the end of the forearm or forelimb of primates such as humans , chimpanzees , monkeys , and lemurs . A few other vertebrates such as the koala (which has two opposable thumbs on each "hand" and fingerprints extremely similar to human fingerprints ) are often described as having "hands" instead of paws on their front limbs. The raccoon
5795-469: The modern period in Limburgish, and the distinction between /ol/ and /al/ was preserved, being reflected as ów and aa respectively. Phonological changes that occurred during Middle Dutch: Middle Dutch was not a single homogeneous language. The language differed by area, with different areas having a different pronunciation and often using different vocabulary. The dialect areas were affected by political boundaries. The sphere of political influence of
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#17327826612495890-456: The motoneurons of the hand muscles; placing the hands "closer" to the brain. The recent evolution of the human hand is thus a direct result of the development of the central nervous system , and the hand, therefore, is a direct tool of our consciousness—the main source of differentiated tactile sensations—and a precise working organ enabling gestures—the expressions of our personalities. There are nevertheless several primitive features left in
5985-455: The muscle belly is located on the forearm. The intrinsic muscle groups are the thenar (thumb) and hypothenar (little finger) muscles; the interosseous muscles ( four dorsally and three volarly ) originating between the metacarpal bones; and the lumbrical muscles arising from the deep flexor (and are special because they have no bony origin) to insert on the dorsal extensor hood mechanism. The fingers have two long flexors, located on
6080-472: The neighbouring areas. Middle Dutch has four major dialects groups: Flemish, Brabantic and Hollandic are known as West Franconian, while Limburgic is known as East Franconian (not to be confused with the High German dialect East Franconian ). In a finer classification there are: Brabantian was spoken primarily in the Duchy of Brabant . It was an influential dialect during most of the Middle Ages, during
6175-403: The palmar gutter deepens. The central-most metacarpal (middle finger) is the most rigid. It and its two neighbors are tied to the carpus by the interlocking shapes of the metacarpal bones. The thumb metacarpal only articulates with the trapezium and is therefore completely independent, while the fifth metacarpal (little finger) is semi-independent with the fourth metacarpal (ring finger) which forms
6270-407: The palmar side of the thumb, index, middle, and half ring fingers. Dorsal branches innervates the distal phalanges of the index, middle, and half ring fingers. The ulnar nerve supplies the ulnar third of the hand, both at the palm and the back of the hand, and the little and half ring fingers. There is a considerable variation to this general pattern, except for the little finger and volar surface of
6365-410: The palmar side. Because the proximal arch simultaneously has to adapt to the articular surface of the radius and to the distal carpal row, it is by necessity flexible. In contrast, the capitate, the "keystone" of the distal arch, moves together with the metacarpal bones and the distal arch is therefore rigid. The stability of these arches is more dependent of the ligaments and capsules of the wrist than of
6460-428: The past participle. In classes 6 and 7, there was no distinction between the two different vowels of the past tense. In classes 4 and 5, the difference was primarily one of length, since ā and â were not distinguished in most dialects. The difference between ê and ē , and between ô and ō , found in classes 1 and 2, was a bit more robust, but also eventually waned in the development to modern Dutch. Consequently,
6555-415: The phalanges of the fingers and thumb these metacarpal bones form five rays or poly-articulated chains. Because supination and pronation (rotation about the axis of the forearm) are added to the two axes of movements of the wrist, the ulna and radius are sometimes considered part of the skeleton of the hand. There are numerous sesamoid bones in the hand, small ossified nodes embedded in tendons;
6650-411: The second- and third-person singular present indicative forms, instead of e . This is a remnant of older i-mutation in these forms. Umlaut is also sometimes found in the past subjunctive in the east. Middle Dutch retained weak verbs as the only productive class of verbs. While Old Dutch still had two different classes of weak verbs (and remnants of a third), this distinction was lost in Middle Dutch with
6745-473: The shoe or boot can occur, moisture wicking liner socks can provide the required friction protection. To avoid friction blisters on the hands, gloves should be worn when using tools such as a shovel or pickaxe, doing manual work such as gardening, or using sports equipment like golf clubs or baseball bats. Oars used for competitive rowing are known for causing frequent blisters on the hands of oarsmen. Weightlifters are also prone to blisters as are gymnasts from
6840-426: The skin and the glove. A lubricant , typically talcum powder , can be used to reduce friction between skin and apparel in the short term. People put talcum powder inside gloves or shoes for this purpose, although this type of lubricant can actually increase the friction in the long term as it absorbs moisture. Increased friction makes blisters more likely. Sunscreen and protective clothing should also be used during
6935-403: The skin underneath needs the top layer to heal properly. A blister may form when the skin has been damaged by friction or rubbing, heat, cold or chemical exposure. Fluid collects between the upper layers of skin (the epidermis ) and the layers below (the dermis ). This fluid cushions the tissue underneath, protecting it from further damage and allowing it to heal. Intense rubbing can cause
7030-483: The so-called "Brabantian expansion" in which the influence of Brabant was extended outwards into other areas. Compared to the other dialects, Brabantian was a kind of "middle ground" between the coastal areas on one hand, and the Rhineland and Limburg on the other. Brabantian Middle Dutch has the following characteristics compared to other dialects: Flemish, consisting today of West and East Flemish and Zeelandic ,
7125-533: The subjunctive became distinguished from the indicative only in the singular but was identical to it in the plural, and also in the past tense of weak verbs. That led to a gradual decline in the use of the subjunctive, and it has been all but lost entirely in modern Dutch. The seven classes of strong verb common to the Germanic languages were retained. The four principal parts were the present tense, first- and third-person singular past tense, remaining past tense, and
7220-407: The swollen appearance will subside. Painful blisters located on hands ( palmar surface ) and feet ( plantar surface ) are due to tissue shearing deeper in the epidermis, near nerve endings. Lower tissues are more susceptible to infection. Friction blisters, caused by rubbing against the skin, can be prevented by reducing the friction to a level where blisters will not form. This can be accomplished in
7315-403: The tendons of these form the anatomical snuff box . Also, the index finger and the little finger have an extra extensor used, for instance, for pointing. The extensors are situated within 6 separate compartments. The first four compartments are located in the grooves present on the dorsum of inferior side of radius while the 5th compartment is in between radius and ulna. The 6th compartment is in
7410-410: The term hand in this sense to distinguish the terminations of the front paws from the hind ones is an example of anthropomorphism . The only true grasping hands appear in the mammalian order of primates . Hands must also have opposable thumbs , as described later in the text. The hand is located at the distal end of each arm. Apes and monkeys are sometimes described as having four hands, because
7505-539: The terms, follow the links on the headings. Notes: Most notable in the Middle Dutch vowel system, when compared to Old Dutch, is the appearance of phonemic rounded front vowels, and the merger of all unstressed short vowels. Long vowels and diphthongs cannot be clearly distinguished in Middle Dutch, as many long vowels had or developed a diphthongal quality, while existing diphthongs could also develop into monophthongs. Sometimes, this occurred only in restricted dialects, other developments were widespread. Many details of
7600-406: The three main inflectional classes. Verbs were inflected in present and past tense, and in three moods: indicative, subjunctive and imperative. The weakening of unstressed vowels affected the distinction between the indicative and subjunctive moods, which had largely been determined by the vowel of the inflectional suffix in Old Dutch. In Middle Dutch, with all unstressed vowels merging into one,
7695-405: The thumb in opposition, making grasping possible. The extensors are located on the back of the forearm and are connected in a more complex way than the flexors to the dorsum of the fingers. The tendons unite with the interosseous and lumbrical muscles to form the extensorhood mechanism. The primary function of the extensors is to straighten out the digits. The thumb has two extensors in the forearm;
7790-415: The thumb is included as one of the fingers . It has 27 bones, not including the sesamoid bone , the number of which varies among people, 14 of which are the phalanges ( proximal , intermediate and distal ) of the fingers and thumb. The metacarpal bones connect the fingers and the carpal bones of the wrist . Each human hand has five metacarpals and eight carpal bones. Fingers contain some of
7885-461: The thumb, the first and second lumbrical. The ulnar nerve supplies the remaining intrinsic muscles of the hand. All muscles of the hand are innervated by the brachial plexus (C5–T1) and can be classified by innervation: The radial nerve supplies the skin on the back of the hand from the thumb to the ring finger and the dorsal aspects of the index, middle, and half ring fingers as far as the proximal interphalangeal joints. The median nerve supplies
7980-410: The toes are long and the hallux is opposable and looks more like a thumb , thus enabling the feet to be used as hands. The word "hand" is sometimes used by evolutionary anatomists to refer to the appendage of digits on the forelimb such as when researching the homology between the three digits of the bird hand and the dinosaur hand. An adult human male's hand weighs about a pound. Areas of
8075-435: The underlying phonemic value. However, by and large, spelling was phonetic, which is logical as people usually read texts out loud. Modern dictionaries tend to represent words in a normalised spelling to form a compromise between the variable spellings on one hand and to represent the sounds of the language consistently. Thus, normalised spellings attempt to be a general or "average" spelling but still being accurate and true to
8170-435: The underside of the forearm. They insert by tendons to the phalanges of the fingers. The deep flexor attaches to the distal phalanx, and the superficial flexor attaches to the middle phalanx. The flexors allow for the actual bending of the fingers. The thumb has one long flexor and a short flexor in the thenar muscle group. The human thumb also has other muscles in the thenar group ( opponens and abductor brevis muscle ), moving
8265-608: The vowels merged with the "soft-long" vowels during the early modern Dutch period. The vowels /eː/ , /œː/ and /oː/ , termed "soft-long" and denoted with a macron ē ō , developed through the lengthening of Old Dutch short vowels in open syllables, but also frequently before /r/ . They were simple monophthongs in all Middle Dutch dialects, with the exception of western Flanders where /eː/ later developed into /ei̯/ . They might have been close-mid but also perhaps open-mid [ɛː] , [œː] and [ɔː] , as in modern Limburgish. There were two open vowels, with "sharp-long" â developed from
8360-465: The weakening of unstressed syllables. The past tense was formed with a suffix -ed- , which generally lost its e through syncope and thus came to be directly attached to the preceding stem. This triggered voicing assimilation, so that t appeared whenever the preceding stem ended in a voiceless consonant. This phenomenon remains in modern Dutch. Unsyncopated forms, which retain the fuller suffix -ed- , are sometimes found, especially with stems ending in
8455-585: Was a general distinction between strong and weak nouns. Eventually even these started to become confused, with the strong and weak endings slowly beginning to merge into a single declension class by the beginning of the modern Dutch period. The strong nouns generally originated from the Old Dutch a-stem, i-stem and u-stem inflections. They mostly had a nominative singular with no ending, and a nominative plural in -e or, for some neuter nouns, with no ending. Most strong nouns were masculine or neuter. Feminines in this class were former i-stems, and could lack an ending in
8550-399: Was fairly minimal in Middle Dutch, appearing only in the masculine and neuter nominative singular. These forms received an -e ending when a definite word (demonstrative, article) preceded, and had no ending otherwise. Adjectives were uninflected when connected through a copula. Thus, even for feminine nouns, no ending appeared: die vrouwe is goet "the lady is good". Some adjectives, namely
8645-471: Was not clearly tied to one political area, instead being divided among various areas, including the Duchy of Limburg (which was south of modern Limburg). It was also the most divergent of the dialects. Kleverlandish ("Kleverlands") was spoken around the area of the Duchy of Cleves , around the Lower Rhine . It represented a transitional dialect between Limburgish and Middle Low German . Middle Dutch
8740-527: Was reflected in the spelling, and clitic pronouns and articles were frequently joined to the preceding or following word. Scribes wrote in their own dialect, and their spelling reflected the pronunciation of that particular scribe or of some prestige dialect by which the scribe was influenced. The modern Dutch word maagd (" maiden ") for example was sometimes written as maghet or maegt , but also meget , magt , maget , magd , and mecht . Some spellings, such as magd , reflect an early tendency to write
8835-423: Was spoken and written between 1150 and 1500. Until the advent of Modern Dutch after 1500 or c. 1550 , there was no overarching standard language , but all dialects were mutually intelligible. During that period, a rich Medieval Dutch literature developed, which had not yet existed during Old Dutch . The various literary works of the time are often very readable for speakers of Modern Dutch since Dutch
8930-490: Was spoken in the County of Flanders , northern parts of the County of Artois and areas around the towns of Calais and Boulogne-sur-Mer . Though due to their intermediary position between West Flemish and Brabantian , the East Flemish dialects have also been grouped with the latter. Flemish had been influential during the earlier Middle Ages (the "Flemish expansion") but lost prestige to the neighbouring Brabantian in
9025-515: Was written in the Latin alphabet , which was not designed for writing Middle Dutch so different scribes used different methods of representing the sounds of their language in writing. The traditions of neighbouring scribes and their languages led to a multitude of ways to write Middle Dutch. Consequently, spelling was not standardised but was highly variable and could differ by both time and place as various "trends" in spelling waxed and waned. Furthermore,
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