The correct sequence of valves in the pathway of blood from the venae cavae to the aorta is

Question

Quizplus · Accepted Answer

After the deoxygenated blood enters into the right atrium through the superior and inferior vena cava, it flows through the right AV valve (tricuspid) into the right ventricle. From there, it is pumped through the pulmonary semilunar valve into the pulmonary artery, which takes it to the lungs for oxygenation. The oxygen-rich blood returns to the left atrium through the pulmonary veins. It then flows through the left AV valve (bicuspid or mitral) into the left ventricle. Finally, the oxygenated blood is pumped through the aortic semilunar valve into the aorta, which distributes it to the rest of the body. So, the correct sequence of valves in the pathway of blood from the venae cavae to the aorta is tricuspid, pulmonary semilunar, bicuspid, aortic semilunar, which is represented in option B.

The Correct Sequence of Valves in the Pathway of Blood