PATHOLOGY MCQ
HEART
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Assertion:SA node is called the pacemaker of the heart.Reason:AVN is responsible for initiating and maintaining the rhythmic contractile activity of heart.
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Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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Assertion is correct but Reason is incorrect
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Assertion is incorrect but Reason is correct
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Explanation:
Detailed explanation-1: -Assertion :Sino-atrial node (SAN) is called the pacemaker. Reason: SAN generates the maximum number of action potentials and is responsible for initiating and maintaining the rhythmic contractions of the heart. Q. Pacemaker (SA Node) of the heart is situated.
Detailed explanation-2: -Atrioventricular node is present near the tricuspid valve, within the right atrium. SAN can generate maximum number of action potentials and initiates rhythmic contractile activity of the heart, that’s why it is called pacemaker of the heart.
There is 1 question to complete.