Which heart chamber is described as the pump that takes in blood?

Which heart chamber is described as the pump that takes in blood?

• A. Aorta
• B. Left Atrium
• C. Right Atrium
• D. Right Ventricle

Answer: (C)

The main idea is that the heart has receiving chambers called atria that collect blood before it moves on to be pumped out by the ventricles. The right atrium specifically handles the return flow from the body, receiving deoxygenated blood via the superior and inferior vena cavae (and the coronary sinus) and then delivering it to the right ventricle through the tricuspid valve. The left atrium, by contrast, collects oxygenated blood from the lungs via the pulmonary veins and passes it to the left ventricle. The aorta is not a chamber but the main artery leaving the heart, and the ventricles are the actual pumping chambers that push blood out to the lungs or the rest of the body. So, when describing a chamber that takes in blood, the right atrium fits because it is the receiving chamber for systemic blood.

The main idea is that the heart has receiving chambers called atria that collect blood before it moves on to be pumped out by the ventricles. The right atrium specifically handles the return flow from the body, receiving deoxygenated blood via the superior and inferior vena cavae (and the coronary sinus) and then delivering it to the right ventricle through the tricuspid valve. The left atrium, by contrast, collects oxygenated blood from the lungs via the pulmonary veins and passes it to the left ventricle. The aorta is not a chamber but the main artery leaving the heart, and the ventricles are the actual pumping chambers that push blood out to the lungs or the rest of the body. So, when describing a chamber that takes in blood, the right atrium fits because it is the receiving chamber for systemic blood.