Which circulation supplies blood to all parts of the body except the lungs?

Which circulation supplies blood to all parts of the body except the lungs?

• A. Systemic circulation
• B. Pulmonary circulation
• C. Coronary circulation
• D. Cerebral circulation

Answer: (A)

Systemic circulation delivers blood to all parts of the body except the lungs. It starts in the left ventricle, moves through the aorta and its branches to reach tissues everywhere, and returns deoxygenated blood to the right atrium via the vena cavae and the coronary sinus. This contrasts with pulmonary circulation, which sends blood from the right ventricle to the lungs for gas exchange and back to the left atrium. Other circuits exist to supply specific areas, such as the heart muscle itself or the brain, but the term systemic refers to the whole-body circulation.

Systemic circulation delivers blood to all parts of the body except the lungs. It starts in the left ventricle, moves through the aorta and its branches to reach tissues everywhere, and returns deoxygenated blood to the right atrium via the vena cavae and the coronary sinus. This contrasts with pulmonary circulation, which sends blood from the right ventricle to the lungs for gas exchange and back to the left atrium. Other circuits exist to supply specific areas, such as the heart muscle itself or the brain, but the term systemic refers to the whole-body circulation.