Heart physiology question

Practice Question Solving
1

What blood flow does the right semilunar valve prevent?

A. Backflow of blood to the right atrium during ventricular contraction
B. Blood flowing from the aorta back into the heart when the ventricle is filling
C. Blood flowing from the pulmonary artery to the right ventricle when the heart is relaxing
D. Blood flowing from the right atrium to the vena cava when the right atrium contracts

Does anybody know why B is not the correct answer? Thank you

2

Aorta is for the left side of the heart! So it would be the left semilunar valve stopping the blood flow back into the heart from the aorta, right semilunar is for the pulmonary artery (so should be C i think?)

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3

You’re right, I missed the keyword “right” semi-lunar valve. The answer is C