Which valve guards the base of the aorta and opens when the ventricles are contracting?
A) mitral valve
B) aortic semilunar valve
C) bicuspid valve
D) pulmonary semilunar valve
E) tricuspid valve

Question

Quizplus · Accepted Answer

The aortic semilunar valve guards the base of the aorta and opens when the ventricles contract to allow blood to be ejected into the aorta. The mitral valve (A) and tricuspid valve (E) control blood flow between the atria and ventricles, while the bicuspid valve (C) is another name for the mitral valve. The pulmonary semilunar valve (D) guards the base of the pulmonary trunk and opens when the right ventricle contracts to allow blood to be ejected into the pulmonary circulation.

Which Valve Guards the Base of the Aorta and Opens