Question

List in the order the major blood vessels, chambers, and valves through which a drop of blood must pass in traveling from a vena cava

Answer 1

Deoxygenated blood flows from the vena cava, into the right atrium, it's then pumped through the atrio-ventricular valves and into the right ventricles. It is then pumped from the right ventricles through the semi-lunar valves to the pulmonary artery where deoxygenated blood is carried to the lungs