What does the human heart NOT possess? | vedclass

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(D) The human heart is a myogenic organ composed of cardiac muscle. It consists of four chambers: two atria (right and left) and two ventricles (right

Vedclass · Accepted Answer

Sinus venosus

Vedclass · Answer

(D) The human heart is a myogenic organ composed of cardiac muscle. It consists of four chambers: two atria (right and left) and two ventricles (right and left). The sinus venosus is a structure found in the hearts of lower vertebrates like fish and amphibians,which acts as a pacemaker. In the human heart,the sinus venosus is incorporated into the wall of the right atrium during embryonic development to form the sinoatrial $(SA)$ node. Therefore,the human heart does not possess a distinct sinus venosus.

What does the human heart $NOT$ possess?

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