Which heart chamber receives oxygenated blood from the lungs?

• A. Right atrium
• B. Right ventricle
• C. Left atrium
• D. Left ventricle

Answer: (C)

Oxygenated blood from the lungs returns to the heart through the pulmonary veins and enters the left atrium. This chamber serves as the receiving point for blood that has just picked up oxygen, before it moves into the left ventricle to be pumped to the rest of the body. The other chambers have different roles: the right atrium collects deoxygenated blood from the body, the right ventricle sends that blood to the lungs for oxygen, and the left ventricle pushes oxygen-rich blood out to the body.