The bundle of His ( BH ) or His bundle ( HB ) ( / h ɪ s / "hiss" ) is a collection of heart muscle cells specialized for electrical conduction . As part of the electrical conduction system of the heart , it transmits the electrical impulses from the atrioventricular node (located between the atria and the ventricles ) to the point of the apex of the fascicular branches via the bundle branches . The fascicular branches then lead to the Purkinje fibers , which provide electrical conduction to the ventricles, causing the cardiac muscle of the ventricles to contract at a paced interval.
15-691: (Redirected from Hb ) [REDACTED] Look up HB or Hb in Wiktionary, the free dictionary. HB or Hb may refer to: Academia [ edit ] H-b index , an extension of the h-index used in determining academic impact H-B Woodlawn , a secondary education program in Arlington, Virginia, US Hathaway Brown School , an all-girls private school in Shaker Heights, Ohio, US Arts and media [ edit ] HB (band) ,
30-406: A Finnish Christian symphonic metal musical group Hanna-Barbera , a cartoon studio, later folded into Warner Bros. Animation and replaced by Cartoon Network Studios Heaven Below , an American rock band Helluva Boss , an adult animated TV show Businesses and brands [ edit ] HB (car) , a 1920s automobile HB (cigarette) , a German brand of cigarettes HB Construction ,
45-535: A city in southern California, US Switzerland and Liechtenstein ( aircraft registration prefix ), distinguished by use of emblems Zürich Hauptbahnhof (often shortened to HB), the central train station in Zürich, Switzerland Science and technology [ edit ] HB pencil (hard black), a classification of pencils HB, a flammability rating as set forth in UL 94 Horizontal branch , in astrophysics HB,
60-729: A football team in Denmark Holstebro Boldklub , a football team in Denmark People [ edit ] H. B. Acton (1908–1974), political philosopher H. B. Bailey (1936–2003), NASCAR driver H. B. Higgins (1851–1929), Australian politician H. B. Reese (1879–1956), candy maker H. B. Warner (1875–1958), motion picture executive Politics [ edit ] Herri Batasuna , defunct far-left Basque nationalist political party in Spain Other uses [ edit ] Half-board ,
75-468: A housing arrangement in which the host provides only a breakfast and dinner meals See also [ edit ] Hull and Barnsley Railway (H&BR) " 2HB ", a song by Roxy Music HB2 , North Carolina House Bill 2 BH (disambiguation) Њ , Nje, a letter of the Cyrillic script Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
90-465: A level in the Brinell scale hardness test Medicine [ edit ] Heart block , cardiovascular system disease that involves the heart's electrical conduction system Hemoglobin (Hb), group of iron-containing proteins found in most animals which primary function is to carry oxygen to the tissues Hepatitis B , a human viral infection His bundle , a specialized collection of cells in
105-567: A private US general contractor construction business HB Ice Cream , an Irish brand Asia Atlantic Airlines (IATA code HB; ceased) Greater Bay Airlines (IATA code: HB), an airline based in Hong Kong Hamilton Bradshaw , a London-based private equity firm Hampton and Branchville Railroad (H&B) Holland & Barrett (H&B), a UK health food shop chain Hasbro , an American toy company HB, logo for
120-427: Is an important part of the electrical conduction system of the heart , as it transmits impulses from the atrioventricular node, located at the anterior-inferior end of the interatrial septum , to the ventricles of the heart. The bundle of His branches into the left and the right bundle branches , which run along the interventricular septum . The left bundle branch further divides into the left anterior fascicle and
135-431: Is called trifascicular block . Infra-hisian blocks limit the heart's ability to coordinate the activities of the atria and ventricles, which usually results in a decrease in its efficiency in pumping blood. A 2000 study found that direct His bundle pacing is more effective in producing synchronized ventricular contraction—and therefore in improving cardiac function—than apical pacing. These specialized muscle fibers in
150-678: The Staatliches Hofbräuhaus in München , also Hofbräu München , a brewery owned by the Bavaria government Places [ edit ] Bremen (state) (license plate: HB), a German state Hanuabada , a village in Papua New Guinea, known as HB to the locals Hermosa Beach, California , a city in southern California, US Hubei (Guobiao abbreviation HB), a province of China Huntington Beach, California ,
165-466: The cardiomyocytes that make up the electrical conduction system of the heart are called heart blocks . Heart blocks are separated into different categories based on the location of the cellular damage. Damage to any of the conducting cells in or below the bundle of His is collectively referred to as "infra-Hisian blocks". To be specific, blocks that occur in the right or left bundle branches are called " bundle branch blocks ", and those that occur in either
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#1732787408747180-457: The left posterior fascicle . These bundles and fascicles give rise to thin filaments known as Purkinje fibers . These fibers distribute the impulse to the ventricular muscle. The ventricular conduction system comprises the bundle branches and the Purkinje networks. It takes about 0.03–0.04 seconds for the impulse to travel from the bundle of His to the ventricular muscle . Disorders affecting
195-411: The left anterior or the left posterior fascicles are called "fascicular blocks", or "hemiblocks". The conditions in which both the right bundle branch and either the left anterior fascicle or the left posterior fascicle are blocked are collectively referred to as bifascicular blocks , and the condition in which the right bundle branch, the left anterior fascicle, and the left posterior fascicle are blocked
210-614: The title HB . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=HB&oldid=1258766541 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages HB">HB The requested page title contains unsupported characters : ">". Return to Main Page . His bundle The bundle of His
225-546: The vertebrate heart Sport [ edit ] Half-back line , the positions of three players in Australian rules football Halfback (American football) , an American football position Half back (association football) , another name for a midfielder Handball (disambiguation) , a number of sports Havnar Bóltfelag , a football team in the Faroe Islands Herfølge Boldklub ,
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