Question:
Consider the following statements:
Assertion (A): Arteries are more elastic than veins.
Reason (R): The wall of arteries has thick muscular wall and two elastic laminae.
Consider the following statements:
Assertion (A): Arteries are more elastic than veins.
Reason (R): The wall of arteries has thick muscular wall and two elastic laminae.
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Arteries:
• Thick wall
• Narrow lumen
• More elastic
• High pressure blood flow Veins:
• Thin wall
• Wider lumen
• Less elastic
• Possess valves
• Thick wall
• Narrow lumen
• More elastic
• High pressure blood flow Veins:
• Thin wall
• Wider lumen
• Less elastic
• Possess valves
Updated On: Jun 17, 2026
- Both (A) and (R) are correct, (R) is the correct explanation for (A)
- Both (A) and (R) are correct, (R) is not the correct explanation for (A)
- (A) is correct, but (R) is not correct
- (A) is not correct, but (R) is correct
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Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Concept:
Arteries carry blood away from the heart under high pressure.
Therefore their walls are thicker, stronger and more elastic than veins.
Step 1: Examine Assertion (A). Arteries must withstand high blood pressure generated by the heart. Hence they possess greater elasticity than veins. Therefore Assertion (A) is correct.
Step 2: Examine Reason (R). Arterial walls contain:
• Thick smooth muscle layer.
• Internal elastic lamina.
• External elastic lamina. These elastic layers enable arteries to stretch and recoil. Therefore Reason (R) is also correct.
Step 3: Check whether Reason explains Assertion. Presence of thick muscular wall and elastic laminae directly causes greater elasticity. Thus Reason correctly explains Assertion. \[ \boxed{\text{A is true, R is true, and R explains A}} \]
Step 4: Choose the correct option. \[ \boxed{\text{Option (A)}} \]
Step 1: Examine Assertion (A). Arteries must withstand high blood pressure generated by the heart. Hence they possess greater elasticity than veins. Therefore Assertion (A) is correct.
Step 2: Examine Reason (R). Arterial walls contain:
• Thick smooth muscle layer.
• Internal elastic lamina.
• External elastic lamina. These elastic layers enable arteries to stretch and recoil. Therefore Reason (R) is also correct.
Step 3: Check whether Reason explains Assertion. Presence of thick muscular wall and elastic laminae directly causes greater elasticity. Thus Reason correctly explains Assertion. \[ \boxed{\text{A is true, R is true, and R explains A}} \]
Step 4: Choose the correct option. \[ \boxed{\text{Option (A)}} \]
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