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19-426: An arm is an upper limb of the body. Arm or ARM may also refer to: Arm By anatomical definitions, the bones , ligaments and skeletal muscles of the shoulder girdle , as well as the axilla between them, are considered parts of the upper limb, and thus also components of the arm. The Latin term brachium , which serves as a root word for naming many anatomical structures, may refer to either

38-523: A groove on the posterior aspect of the medial epicondyle of the humerus . Several veins are also in the area (for example, the median cubital vein , cephalic vein , and basilic vein ) but these are usually considered superficial to the cubital fossa, and not part of its contents. From lateral to medial, the order of the contents within the cubital fossa can be described by the acronym TAN: tendon, artery, nerve Like other flexion surfaces of large joints ( groin , popliteal fossa , armpit and essentially

57-418: Is accompanied by venae comitantes (accompanying veins). It gives branches to the muscles of the anterior compartment. The artery is in between the median nerve and the tendon of the biceps muscle in the cubital fossa . It then continues into the forearm . The deep artery of the arm travels through the lower triangular space with the radial nerve . From here onwards it has an intimate relationship with

76-485: Is believed that several arms depict omnipotence of gods. In popular culture Thakur did not have arms in the movie Sholay. In West Africa, the Bambara use forearm to symbolize the spirit, which is a link between God and man. Symbolic gestures of raising both hands signal surrender, appeals for mercy, and justice. The cubital fossa is clinically important for venepuncture and for blood pressure measurement. When

95-411: Is from the fifth cervical spinal nerve to the first thoracic spinal nerve, originates as the continuation of the posterior cord of the brachial plexus. This nerve enters the lower triangular space (an imaginary space bounded by, amongst others, the shaft of the humerus and the triceps brachii) of the arm and lies deep to the triceps brachii. Here it travels with the deep artery of the arm , which sits in

114-412: The elbow joint . The veins of the arm carry blood from the extremities of the limb, as well as drain the arm itself. The two main veins are the basilic and the cephalic veins . There is a connecting vein between the two, the median cubital vein , which passes through the cubital fossa and is clinically important for venepuncture (withdrawing blood). The basilic vein travels on the medial side of

133-401: The radial groove of the humerus. This fact is very important clinically as a fracture of the shaft of the bone here can cause lesions or even transections in the nerve. Other nerves passing through give no supply to the arm. These include: The main artery in the arm is the brachial artery . This artery is a big continuation of the axillary artery . The point at which the axillary becomes

152-420: The radial nerve . The musculocutaneous nerve , from C5, C6, C7, is the main supplier of muscles of the anterior compartment. It originates from the lateral cord of the brachial plexus of nerves. It pierces the coracobrachialis muscle and gives off branches to the muscle, as well as to brachialis and biceps brachii. It terminates as the anterior cutaneous nerve of the forearm . The radial nerve, which

171-433: The anterior part of the neck ), it is an area where blood vessels and nerves pass relatively superficially, and with an increased amount of lymph nodes . During blood pressure measurements , the stethoscope is placed over the brachial artery in the cubital fossa. The artery runs medial to the biceps tendon. The brachial pulse may be palpated in the cubital fossa just medial to the tendon. The area just superficial to

190-401: The arm and forearm of a human or other hominid animals. It lies anteriorly to the elbow (antecubital) (Latin cubitus ) when in standard anatomical position . The cubital fossa is a triangular area having three borders. The cubital fossa contains four main vertical structures (from lateral to medial): The ulnar nerve is also in the area, but is not in the cubital fossa; it occupies

209-483: The arm and terminates at the level of the seventh rib. The cephalic vein travels on the lateral side of the arm and terminates as the axillary vein. It passes through the deltopectoral triangle , a space between the deltoid and the pectoralis major muscles. In Hindu, Buddhist and Egyptian iconography the symbol of the arm is used to illustrate the power of the sovereign. In Hindu tradition gods are depicted with several arms which carry specific symbols of their powers. It

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228-430: The arm is fractured this may refer to a fracture of the humerus bone . Veins on the arm may be taken when a coronary artery bypass graft is needed. In other animals, the term arm can also be used for homologous or analogous structures (such as one of the paired forelimbs of a four-legged animal or the arms of cephalopods , respectively). In anatomical usage, the term arm may sometimes refer specifically to

247-422: The brachial is distal to the lower border of teres major. The brachial artery gives off an unimportant branch, the deep artery of arm . This branching occurs just below the lower border of teres major . The brachial artery continues to the cubital fossa in the anterior compartment of the arm. It travels in a plane between the biceps and triceps muscles, the same as the median nerve and basilic vein . It

266-457: The cubital fossa is often used for venous access ( phlebotomy ) in procedures such as injections and obtaining samples for blood tests . A number of superficial veins can cross this region. It may also be used for the insertion of a peripherally inserted central catheter . Historically, during bloodletting , the bicipital aponeurosis (the ceiling of the cubital fossa) was known as the "grace of God tendon" because it separated and protected

285-416: The hand's manipulative tasks. The ball and socket shoulder joint allows for movement of the arms in a wide circular plane, while the structure of the two forearm bones which can rotate around each other allows for additional range of motion at that level. Cubital fossa The cubital fossa , antecubital fossa , chelidon , or inside of elbow is the area on the anterior side of the upper part between

304-438: The muscles into two osteofascial compartments : the anterior and the posterior compartments of the arm . The fascia merges with the periosteum (outer bone layer) of the humerus. The anterior compartment contains three muscles: biceps brachii , brachialis and coracobrachialis muscles. They are all innervated by the musculocutaneous nerve . The posterior compartment contains only the triceps brachii muscle , supplied by

323-407: The radial nerve. They are both found deep to the triceps muscle and are located on the spiral groove of the humerus . Therefore, fracture of the bone may not only lead to lesion of the radial nerve , but also haematoma of the internal structures of the arm. The artery then continues on to anastamose with the recurrent radial branch of the brachial artery , providing a diffuse blood supply for

342-405: The segment between the shoulder and the elbow, while the segment between the elbow and wrist is the forearm . However, in common, literary, and historical usage, arm refers to the entire upper limb from shoulder to wrist. This article uses the former definition; see upper limb for the wider definition. In primates, the arm is adapted for precise positioning of the hand and thus assist in

361-473: The upper limb as a whole or to the upper arm on its own. The humerus is one of the three long bones of the arm. It joins with the scapula at the shoulder joint and with the other long bones of the arm, the ulna and radius at the elbow joint . The elbow is a complex hinge joint between the end of the humerus and the ends of the radius and ulna. The arm is divided by a fascial layer (known as lateral and medial intermuscular septa ) separating

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