Why do arteries have thick and elastic walls?
Answer and explanation
Correct answer: To withstand high pressure from the heart
Arteries carry blood away from the heart, and each ventricular contraction forces blood into them at relatively high pressure. Their thick muscular walls prevent damage and their elastic fibres allow them to expand during systole and recoil between beats. This elasticity helps maintain smoother, continuous blood flow. Hence option A is correct; digestion, urine filtration and air storage are not arterial functions.
Frequently asked questions
What is the correct answer to this question?
To withstand high pressure from the heart
Why is this the correct answer?
Arteries carry blood away from the heart, and each ventricular contraction forces blood into them at relatively high pressure. Their thick muscular walls prevent damage and their elastic fibres allow them to expand during systole and recoil between beats. This elasticity helps maintain smoother, continuous blood flow. Hence option A is correct; digestion, urine filtration and air storage are not arterial functions.
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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