SCIENCE
CIRCULATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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SA Node
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AV Node
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Right and Left Bundle Branches
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Bundle of His
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Detailed explanation-1: -The main parts of the system are the SA node, AV node, bundle of HIS, bundle branches, and Purkinje fibers.
Detailed explanation-2: -Function. The bundle of His 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.
Detailed explanation-3: -The bundle of His is a heart muscle that takes part in electrical conduction in the heart. Purkinje fibres are branched fibres that carry the electrical impulse to the ventricles. It is branched into both the right and left bundle branches of the heart, and runs through the interventricular septum.
Detailed explanation-4: -The electrical impulse travels from the sinus node to the atrioventricular node (also called AV node). There, impulses are slowed down for a very short period, then continue down the conduction pathway via the bundle of His into the ventricles.