Why are the walls of arteries thick and elastic?
Answer and explanation
Correct answer: Because they carry blood from the heart at relatively high pressure
The governing concept is pressure-resistant blood transport. The ventricles pump blood into arteries with strong pressure, so arterial walls need thick muscular layers to withstand that force. Their elasticity allows them to expand during a heartbeat and recoil between beats, helping maintain smoother flow. Option A is correct; B, C and D describe functions of other systems or organisms.
Frequently asked questions
What is the correct answer to this question?
Because they carry blood from the heart at relatively high pressure
Why is this the correct answer?
The governing concept is pressure-resistant blood transport. The ventricles pump blood into arteries with strong pressure, so arterial walls need thick muscular layers to withstand that force. Their elasticity allows them to expand during a heartbeat and recoil between beats, helping maintain smoother flow. Option A is correct; B, C and D describe functions of other systems or organisms.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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