In a normal healthy heart, if the three things listed below are true: atrial cel

Question

In a normal healthy heart, if the three things listed below are true: atrial cells are at resting membrane potential, semilunar valves are closed, blood is flowing through atria and into ventricles, then you would expect the following to also be true. atria are in systole, ventricular cells at resting membrane potential, no audible heart sounds AV valves open, ventricles in the middle of systole, no audible heart sounds A V valves open, ventricular cells at resting membrane potential, no audible heart sounds AV valves open, ventricular cells at resting membrane potential, second heart sound audible T wave present, blood moving into systemic circuit, first heart sound audible

Explanation / Answer

when blood flow from atrial to the ventricules AV valves mitral valve and bicuspid valve opend know the ventricules receives the blood so ventricular function is less so cells are resting position. When AV valves opens the second heart sound is audible, in same way aortic and pulmonary vavles opens AV valves are closed first heart sound is audible.

By above explanation the correct answer is: D ( AV valves open, ventricular cells at resting membran potential, second heart sound audible)

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