PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The role of the atrioventricular node (AV node) is to ____
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initiate a sinus rhythm
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conduct impulses to the sinoatrial node (SA node)
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initiate ventricular depolarization
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slow down impulses so that the atria can contract to fill the adjacent ventricles with blood
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Explanation:
Detailed explanation-1: -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.
Detailed explanation-2: -The delaying an electric impulse through the atrioventricular node (AV node) allows atria to completely empty themselves into the ventricle for contraction before the blood pumps out through ventricles.
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