Q1. [1] § 5.4 TRANSPORTATION
Which of the following statement(s) is (are) true about human heart ?
(a) Right atrium receives oxygenated blood from lungs through pulmonary artery.
(b) Left atrium transfers oxygenated blood to left ventricle which sends it to various parts of the body.
(c) Right atrium receives deoxygenated blood through vena cava from upper and lower body.
(d) Left atrium transfers oxygenated blood to aorta which sends it to different parts of the body.
- (A) (a)
- (B) (a) and (d)
- (C) (b) and (c)
- (D) (b) and (d)
Previously asked in CBSE board exam
2024 31/2/1 Q8
Generated by claude-sonnet-4-6 · 2026-06-11 09:48 · grounding rag
Model Answer
(C) (b) and (c)
Statement (b) is correct — left atrium transfers oxygenated blood to left ventricle, which pumps it to the body. Statement (c) is correct — right atrium receives deoxygenated blood via vena cava.
Explanation
From the passage: "Oxygen-rich blood from the lungs comes to… the left atrium… the left ventricle contracts… the blood is pumped out to the body. De-oxygenated blood comes from the body to… the right atrium." Statement (a) is wrong because oxygenated blood comes via pulmonary veins, not pulmonary artery. Statement (d) is wrong because the left ventricle (not left atrium) pumps blood into the aorta.
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