Which Structure Does Blood Pass Through Immediately Before Entering the Right

Question

Which structure does blood pass through immediately before entering the right atrium?
A)vena cava
B)aorta
C)atrioventricular valve
D)semilunar valve
E)left atrium

Accepted Answer

Blood enters the right atrium from the body through the vena cava, which is the large vein that returns deoxygenated blood to the heart.