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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.

Related tags

ArteriesBlood-PressureCirculationLife ProcessesWorld Of LivingScienceClass 10 Mcq

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