Which part of the heart receives deoxygenated blood from the body?

The right atrium is the correct choice because it plays a crucial role in the circulatory system by receiving deoxygenated blood from the body. This blood is returned from the systemic circulation through two major veins: the superior and inferior vena cavae. Once the right atrium fills with this deoxygenated blood, it contracts and pushes the blood into the right ventricle, which then sends it to the lungs for oxygenation.

Understanding the functions of the heart chambers is key in cardiology. The left atrium, in contrast, receives oxygenated blood from the lungs, which is not relevant in this context. The left ventricle then pumps this oxygen-rich blood out to the body, while the right ventricle handles blood returning from the right atrium, directing it to the lungs for oxygen. Thus, the right atrium is specifically designated for managing the deoxygenated blood coming from the systemic circulation.