Question

Which side of the heart pumps only deoxygenated blood?

• A. Right
• B. Left
• C. Both right and left
• D. None of the above

Answer 1

Answer: (A)

Right

The right atrium receives deoxygenated blood from the superior vena cava, which drains blood from the veins of the upper organs and arms. The right atrium also receives blood from the inferior vena cava, which drains blood from the veins of the lower organs and legs. This deoxygenated blood then passes to the right ventricle through the right atrioventricular valve (tricuspid valve).