How does the human circulatory system work?

Biology

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The circulatory system is a double loop: Pulmonary circuit: Right ventricle → pulmonary arteries → lungs (gas exchange: CO₂ out, O₂ in) → pulmonary veins → left atrium. Systemic circuit: Left ventricle → aorta → body (delivers O₂, picks up CO₂) → vena cava → right atrium. The heart beats ~72 times/minute, pumping ~5L of blood. Arteries carry blood FROM the heart (thick walls, high pressure). Veins carry blood TO the heart (valves prevent backflow). Capillaries: gas/nutrient exchange.

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The circulatory system is a double loop: Pulmonary circuit: Right ventricle → pulmonary arteries → lungs (gas exchange: CO₂ out, O₂ in) → pulmonary veins → left atrium.

How does the human circulatory system work?
Biology

This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.

ScanSolve AI Answer
The circulatory system is a double loop: Pulmonary circuit: Right ventricle → pulmonary arteries → lungs (gas exchange: CO₂ out, O₂ in) → pulmonary veins → left atrium. Systemic circuit: Left ventricle → aorta → body (delivers O₂, picks up CO₂) → vena cava → right atrium. The heart beats ~72 times/minute, pumping ~5L of blood. Arteries carry blood FROM the heart (thick walls, high pressure). Veins carry blood TO the heart (valves prevent backflow). Capillaries: gas/nutrient exchange.