A) Is there a time during the cardiac cycle when both valves on the left side of the heart are open? B) Is there a time during the cardiac cycle when both valves on the left side of the heart are closed?
A) Is there a time during the cardiac cycle when both valves on the left side of the heart are open? B) Is there a time during the cardiac cycle when both valves on the left side of the heart are closed?
a) nope - because it all depends on the pressure of the atrium or ventricles