What is pulmonary circulation?

What is pulmonary circulation?

• A. Heart — body
• B. Heart — lungs — heart
• C. Brain — heart
• D. Liver — heart

Answer: (B)

Pulmonary circulation is the pathway that carries blood between the heart and the lungs for gas exchange. Blood is pumped from the right side of the heart to the lungs via the pulmonary arteries, where it releases carbon dioxide and picks up oxygen, then returns to the left side of the heart through the pulmonary veins. In other words, it goes from the heart to the lungs and back to the heart. This is different from systemic circulation, which moves blood to and from the rest of the body. The other options describe routes to organs like the body, brain, or liver and don’t involve the lungs, so they aren’t pulmonary circulation.

Pulmonary circulation is the pathway that carries blood between the heart and the lungs for gas exchange. Blood is pumped from the right side of the heart to the lungs via the pulmonary arteries, where it releases carbon dioxide and picks up oxygen, then returns to the left side of the heart through the pulmonary veins. In other words, it goes from the heart to the lungs and back to the heart. This is different from systemic circulation, which moves blood to and from the rest of the body. The other options describe routes to organs like the body, brain, or liver and don’t involve the lungs, so they aren’t pulmonary circulation.