Question

Isovolumetric contraction ________. A) refers to the short period during ventricular systole when the ventricles are completely closed chambers B) occurs while the atrioventricular (AV) valves are open C) occurs immediately after the aortic and pulmonary semilunar valves close D) occurs only in people with heart valve defects

Answer 1

Answer:

A

Explanation:

isovolumetric contraction is an event occurring in early systole during which the ventricles contract with no corresponding volume change (isovolumetrically). This short-lasting portion of the cardiac cycle takes place while all heart valves are closed.