HUMAN PHYSIOLOGY
BODY FLUIDS AND CIRCULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Muscle fibres distributed throughout the heart walls
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Muscle fibres found only on the ventricle wall
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Nerve fibres distributed in ventricles
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Nerve fibres found throughout the heart
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Detailed explanation-1: -Bundle of His is a muscle fibre that carries electrical impulses to the ventricles. It is distributed only through walls of ventricles only.
Detailed explanation-2: -The bundle of his is a network of the muscle fibers found in the wall of ventricles . Which transmits the electrical impulses from AV node to the point of the apex of heart via bundle branches of bundle of his.
Detailed explanation-3: -The bundle of His is an elongated segment connecting the AV Node and the left and right bundle branches of the septal crest. It is approximately 1.8 cm long in an adult heart[4] and is primarily located deep within the dense connective tissue.
Detailed explanation-4: -The bundle of His is a group of fibers that carry electrical impulses through the center of the heart. If these signals are blocked, you will have problems with your heartbeat. Watch this video about:Cardiac conduction system. The His bundle electrography is part of an electrophysiology study (EPS).
Detailed explanation-5: -A single bundle of muscle fibres is known as fasciculus (plural: fasciculi) and is surrounded by a layer of connective tissue called the perimysium. Within the fasciculus, each individual muscle cell, called a muscle fiber, is surrounded by connective tissue called the endomysium.