Anatomy & PhysiologyCâu 75 / 100
What happens during ventricular diastole?
a.The ventricles relax and fill with blood
b.The ventricles contract and eject blood
c.The atrioventricular valves snap shut
d.Blood is forced into the aorta and pulmonary artery
Giải thích
Diastole is the relaxation and filling phase, during which the atrioventricular valves are open and blood flows from the atria into the ventricles. Contraction and ejection define systole. The atrioventricular valves close at the start of systole, and blood enters the great vessels only when the ventricles contract.
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