Q11
1 markMCQSection A

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 from different parts of the body through vena cava. (d) Left atrium transfers oxygenated blood to aorta which sends it to different parts of the body.

Life Processes
Transportation in Human Beings

Options

(A)(b) only
(B)(a) and (d)
(C)(b) and (c)
(D)(b) and (d)
Official Answer

C

Left atriumLeft ventricleRight atriumVena cavaOxygenated bloodDeoxygenated blood

Marking Scheme

  • 1Identification of correct statements (b) and (c): 1 Mark

Hint

Recall the path of oxygenated and deoxygenated blood through the chambers of the heart. Oxygenated blood from the lungs enters the left side, while deoxygenated blood from the body enters the right side.

Quick Oral Answer

The right atrium receives deoxygenated blood from the body via the vena cava, and the left atrium receives oxygenated blood from the lungs via the pulmonary veins.

Analysis & Explanation

Let us evaluate each statement based on the human circulatory system:

  • Statement (a) is incorrect: The right atrium receives deoxygenated blood from the body tissues via the vena cava, not oxygenated blood from the lungs. Oxygenated blood from the lungs is received by the left atrium via the pulmonary veins.
  • Statement (b) is correct: The left atrium receives oxygenated blood from the lungs and transfers it to the left ventricle. The left ventricle then pumps this oxygenated blood to various parts of the body.
  • Statement (c) is correct: The right atrium receives deoxygenated blood collected from different parts of the body through the superior and inferior vena cava.
  • Statement (d) is incorrect: The left atrium transfers oxygenated blood to the left ventricle, not directly to the aorta. It is the left ventricle that pumps the blood into the aorta to be distributed to the body.

Since statements (b) and (c) are true, the correct option is C.

Common Mistakes

  1. 1Students often confuse the left and right sides of the heart, forgetting that the left side deals with oxygenated blood and the right side deals with deoxygenated blood.
  2. 2Confusing the roles of atria (receiving chambers) and ventricles (pumping chambers).

Interesting Facts

The left ventricle has much thicker muscular walls than the right ventricle because it has to pump blood to the entire body, whereas the right ventricle only pumps blood to the nearby lungs.

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Frequently Asked Questions

How many marks does this question carry in CBSE Class 10 Science 2024?

This question carries 1 mark in the CBSE Class 10 Science 2024 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Life Processes" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Transportation in Human Beings" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2024 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2024 paper.