During which phase of the cardiac cycle are all four heart valves open?
A) ventricular filling
B) isovolumetric relaxation
C) isovolumetric contraction
D) ventricular ejection
E) none

Question

Quizplus · Accepted Answer

During no phase of the cardiac cycle are all four heart valves open simultaneously. The heart valves open and close in a coordinated manner to ensure unidirectional blood flow through the heart chambers.

During Which Phase of the Cardiac Cycle Are All Four