Fill in the blanks below The -(A (greater/less) than the pressure in the atria A

Question

Fill in the blanks below The -(A (greater/less) than the pressure in the atria An increase in pressure in the ventricles will first semilunar) valves and then, -(open/close) the V / semilunar) valves are open when the pressure in the ventricles is (open/close) the (AV/ (AV/semilunar) valves close when the pressure in the pulmonary trunk and (is/is not) a time when all valves are closed and no blood flows through the (AV/semilunar) valves. aorta is greater/less) than the pressure in the ventricles. There heart chambers.

Explanation / Answer

The AV valve opens when the pressure in ventricle is LESS than the pressure in atrium.

An increase in the pressure in ventricle will CLOSE the AV valve and then OPEN the SEMILUNAR valve.

The AV valve CLOSE when the pressure in the pulmonary trunk and aorta is GREATER than the pressure in the ventricles.

There IS a time where all valves are closed and no blood flows through the heart chambers.

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