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Science · 2023 · 3 marks
CBSE 2023 · Region 6 · Set 1 · Q27
Explain the process of transport of oxygenated and deoxygenated blood in a human body.
Explain the process of transport of oxygenated and deoxygenated blood in a human body.
Marking-scheme solution
Oxygen rich blood from the lungs comes to the left atrium of heart.
It then contracts and the blood is transferred to left ventricle.
Left ventricle in turn contracts and the blood is pumped out to the body.
Deoxygenated blood from the body enters the right atrium.
On its contraction, blood enters into right ventricle
Right ventricle pumps it to the lungs for oxygenation
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CBSE Class 10 Science past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.