From systemic circulation, which heart chamber receives deoxygenated blood?

From systemic circulation, which heart chamber receives deoxygenated blood?

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

Answer: (B)

Deoxygenated blood from the body returns to the heart and enters the right atrium via the superior and inferior vena cavae. The right atrium is the receiving chamber for systemic, deoxygenated blood. From there, blood moves through the tricuspid valve into the right ventricle, which pumps it to the lungs via the pulmonary artery for oxygenation. Oxygenated blood then returns from the lungs to the left atrium via the pulmonary veins, moves to the left ventricle, and is pumped out to the body.

Deoxygenated blood from the body returns to the heart and enters the right atrium via the superior and inferior vena cavae. The right atrium is the receiving chamber for systemic, deoxygenated blood. From there, blood moves through the tricuspid valve into the right ventricle, which pumps it to the lungs via the pulmonary artery for oxygenation. Oxygenated blood then returns from the lungs to the left atrium via the pulmonary veins, moves to the left ventricle, and is pumped out to the body.