Blood Returning from the Lung Enters Which Heart Chamber

Question

Blood returning from the lung enters which heart chamber?
A) left atrium
B) left ventricle
C) right ventricle
D) right atrium

Accepted Answer

Blood returning from the lung carries oxygen and enters the left atrium through the pulmonary veins. From there, it passes through the mitral valve into the left ventricle and eventually gets pumped out to the rest of the body via the aorta.