The SAN (Sino-atrial node) can generate actio | vedclass

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Question

(A) The $SAN$ (Sino-atrial node), also known as the pacemaker of the heart, is a specialized patch of nodal tissue present in the right upper corner o

Vedclass · Accepted Answer

$70-75 \, 	ext{min}^{-1}$

Vedclass · Answer

(A) The $SAN$ (Sino-atrial node), also known as the pacemaker of the heart, is a specialized patch of nodal tissue present in the right upper corner of the right atrium.It is capable of generating action potentials without any external stimuli (auto-rhythmic).The rate of impulse generation by the $SAN$ is approximately $70-75$ times per minute, which corresponds to the normal heart rate of a healthy adult.

The $SAN$ (Sino-atrial node) can generate action potentials at a rate of:

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In a rabbit,the opening of the post caval vein into the right auricle is guarded by:

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Select the correct option:
$(1)$ The pericardium is a double-layered membrane surrounding the heart.
$(2)$ The $SA$ node has a higher rate of impulse generation compared to the $AV$ node.

Which vein contains the oxygenated blood in humans?

$A$ specialised nodal tissue embedded in the lower corner of the right atrium,close to the atrioventricular septum,delays the spreading of impulses to the heart apex for about $0.1 \; sec$. This delay allows:

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