ANATOMY

Detailed explanation-1: -A typical heart has two upper and two lower chambers. The upper chambers, the right and left atria, receive incoming blood. The lower chambers, the more muscular right and left ventricles, pump blood out of the heart. The heart valves, which keep blood flowing in the right direction, are gates at the chamber openings.

Detailed explanation-2: -Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium. From the left atrium blood flows into the left ventricle.

Detailed explanation-3: -The right atrium receives blood from the superior and inferior vena-cava. And the left atrium receives blood from the lungs through pulmonary veins. So, these two are called the receiving chambers of the heart. Was this answer helpful?

Detailed explanation-4: -The answer is B), the atria are the receiving chambers of the heart, while the ventricles are the discharging chambers of the heart. There are two atria and two ventricles that are divided into left and right.