The right atrium receives deoxygenated blood from the body and moves it into which chamber?

The right atrium functions as a crucial component of the heart's anatomy and physiology. Its primary role is to receive deoxygenated blood that has circulated throughout the body and is returning to the heart. This blood enters the right atrium from the superior and inferior vena cavae, which are large veins responsible for transporting deoxygenated blood back from the upper and lower portions of the body, respectively.

Once the right atrium is filled with deoxygenated blood, it contracts to push this blood into the right ventricle. The right ventricle then serves as the next chamber in the cardiac cycle, pumping the deoxygenated blood to the lungs through the pulmonary artery. This movement is essential for the blood to receive oxygen and release carbon dioxide, completing the process of pulmonary circulation.

The other options listed do not receive blood directly from the right atrium:

• The left ventricle is primarily involved in pumping oxygenated blood to the body, receiving blood from the left atrium.

• The left atrium receives oxygenated blood from the lungs and is not involved in the deoxygenated blood return from the body.

• The pulmonary artery is the vessel that carries the deoxygenated blood away from the right ventricle to the lungs