'Heart; of; Heart' is | vedclass

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Question

(A) $SA-$node (Sinoatrial node) is located in the right atrial wall near the opening of the superior vena cava.It has the ability to generate action p

Vedclass · Accepted Answer

$SA-$node

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(A) $SA-$node (Sinoatrial node) is located in the right atrial wall near the opening of the superior vena cava.It has the ability to generate action potentials without any external stimuli (auto-rhythmic).It initiates each cardiac cycle and determines the basic rhythm of the heartbeat.Due to this function of initiating and maintaining the heartbeat,it is known as the 'pacemaker' or '$Heart\; of\; Heart$'.Therefore,the correct option is $A$.

'$Heart\; of\; Heart$' is

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$A$: The cardiac impulse which originates from $SA$ node in mammalian heart cannot spread directly from atria to ventricles.
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