HUMAN PHYSIOLOGY
BODY FLUIDS AND CIRCULATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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S A Node A V Node Purkinje fiber A V Bundle
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S A Node Purkinje fiber A V Node A V Bundle
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S A Node A V Node A V Bundle Purkinje fiber
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S A Node Purkinje fiber A V Bundle A V Node
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Detailed explanation-1: -Thus, the correct answer is ‘SA Node, AV node, AV Bundle, Purkinje fibre.
Detailed explanation-2: -so the correct order is SA node, AV node, AV bundle, Purkinje fibres.
Detailed explanation-3: -AV Node The wave of contraction reaches AV node which is simulated to emit an impulse of contraction spreading to the ventricular muscle via the atrio ventricular bundle and then to the Purkinje fibres stimulating heart beat.
Detailed explanation-4: -The components of the cardiac conduction system include (in correct sequence) the sinoatrial (SA) node, the atrioventricular (AV) node, the atrioventricular (AV) bundle, the atrioventricular (AV) bundle branches, and the Purkinje fibers.
Detailed explanation-5: -Final answer: SA node → AV node → Bundle of His → Purkinje fibers represent the correct sequence of the origin and conduction of action potential.