Where is the mammalian heart cycle initiated?
A) In the hypothalamus
B) In the chordae tendinae
C) At the myogenic node in the left atrium
D) At the neurogenic node in the right ventricle
E) At the sinoatrial node in the right atrium

Question

Quizplus · Accepted Answer

The mammalian heart cycle is initiated at the sinoatrial (SA) node, which is located in the right atrium. This node acts as the natural pacemaker of the heart, generating electrical impulses that trigger heart contractions.

Where Is the Mammalian Heart Cycle Initiated