Which Structure "Sees" Oxygenated Blood

Question

Which structure "sees" oxygenated blood?
A) Tricuspid valve
B) Pulmonary artery
C) Pulmonary veins
D) Right semilunar valve

Accepted Answer

The pulmonary veins are the structures that carry oxygenated blood from the lungs to the heart, specifically the left atrium. The tricuspid valve is a valve between the right atrium and right ventricle that prevents blood from flowing back into the right atrium. The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs. The right semilunar valve is a valve between the right ventricle and pulmonary artery that prevents blood from flowing back into the right ventricle.