SA node (Sinoatrial node) ke baare mein sahi | vedclass

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(B) $I$. The $SA$ node is located at the right upper corner of the right atrium,not the lateral wall. Thus,statement $I$ is incorrect.$II$. The $SA$ n

Vedclass · Accepted Answer

All except $IV$

Vedclass · Answer

(B) $I$. The $SA$ node is located at the right upper corner of the right atrium,not the lateral wall. Thus,statement $I$ is incorrect.$II$. The $SA$ node is often referred to as the 'heart of heart' because it controls the rhythm. Statement $II$ is correct.$III$. It initiates the rhythmic contractile activity of the heart. Statement $III$ is correct.$IV$. The term 'pace-keeper' is not standard terminology for the $SA$ node. Statement $IV$ is incorrect.$V$. The $SA$ node is correctly called the 'pacemaker' of the heart. Statement $V$ is correct.Since statements $I$ and $IV$ are incorrect,the correct option is $B$ (All except $IV$).

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