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

Question

Quizplus · Accepted Answer

Isovolumetric contraction refers to the period of ventricular systole when the ventricles are completely closed chambers, meaning that neither the atrioventricular (AV) nor the semilunar valves are open. This occurs after the AV valves close and before the semilunar valves open, allowing for the ventricles to build up pressure before blood is ejected into the pulmonary and systemic circulation.

Isovolumetric Contraction ________