Question

what is systemic circulation?
a systemic circulation is responsible for oxygenating the blood and removing carbon dioxide
b systemic circulation only involves the right side of the heart.
c systemic circulation is the flow of blood from the heart to the lungs and back to the heart.
d systemic circulation is the flow of blood from the heart to the rest of the body and back to the heart.

Explanation:

• Option A: Oxygenating blood and removing CO₂ is pulmonary circulation's role (lungs), not systemic.
• Option B: Systemic circulation involves the left side of the heart (pumps oxygenated blood to body), so "only right side" is wrong.
• Option C: Blood flow to lungs and back is pulmonary circulation, not systemic.
• Option D: Systemic circulation is the circuit where oxygenated blood is pumped from the heart (left ventricle) to the body's tissues and deoxygenated blood returns to the heart (right atrium), matching this description.

Answer:

D. Systemic circulation is the flow of blood from the heart to the rest of the body and back to the heart.