Question

During ventricular systole,
A)Atrioventricular valves open
B)Atrioventricular valves close
C)Semilunar valves close
D)All valves will be open

Answer 1

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full answer.....


the contraction, or period of contraction, of the heart, especially of the ventricles, during which blood is forced into the aorta and pulmonary artery. atrial systole. contraction of the atria by which blood is forced into the ventricles; it precedes the true or ventricular systole. extra systole. see extrasystole.

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