What is the pulmonary side of the heart?

• A. Left atrium and left ventricle
• B. Aorta and pulmonary artery
• C. Right atrium and right ventricle; receives deoxygenated blood and routes to lungs for oxygenation
• D. Right ventricle and left ventricle

Answer: (C)

The pulmonary side is the right side of the heart. It handles deoxygenated blood and sends it to the lungs for oxygenation, using the right atrium to receive blood from the body and the right ventricle to pump it to the lungs via the pulmonary artery. This is distinct from the left side, which handles oxygenated blood going to the body. The other options mix features that don’t belong to the pulmonary side (left-sided chambers or vessels, or a mix of chambers).