AIIMS2017Zoology-Circulatory System

AIIMS 2017 Zoology Arteries and Veins Assertion Reason Question

Type: Assertion Reason-conceptual-Medium-Class 11

Read the Assertion and Reason carefully to mark the correct option from those given below Assertion: Arteries pump blood away from the heart at very low pressure. Reason: Arteries have thin wall with large lumen.

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

B

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

Assertion is true but Reason is false

D

Both Assertion and Reason are false

Correct Answer

Option B

Detailed Explanation

Option B is correct because the assertion that arteries pump blood away from the heart at very low pressure is false; in fact, arteries carry oxygenated blood under high pressure due to the force generated by the heart's contractions. The reason provided is also true, as arteries do have relatively thick walls and a smaller lumen compared to veins, which helps withstand the high pressure, but it does not explain the assertion correctly. Option A is incorrect because the assertion is false, while option C is incorrect because the reason is true, and option D is incorrect as both statements are not false.

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