Assertion: Human heart is four chamber.
Reason: Vena Cava is the only artery that supplies deoxygenated blood to the heart.
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Answer:
both the assertion and reason is true,but reason is not the explanation of assertion.
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The Assertion( Human heart is four chamber) is true but Reason (Vena Cava is the only artery that supplies deoxygenated blood to the heart) is false.
Explanation:
- Humans have a four-chambered heart that separates oxygenated and deoxygenated blood completely. The right atrium gets deoxygenated blood from both the upper and lower bodies.
- The right ventricle sends deoxygenated blood to the lungs through the pulmonary artery for oxygenation. As a result, the circulatory system is extremely efficient.
- The heart has valves that enable blood to flow in only one way; yet, the existence of valves in the heart plays no function in preventing the mixing of deoxygenated and oxygenated blood.
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