Which of the following have thickest walls?
Correct answer: A. Arteries
- A. Arteries
- B. Veins
- C. Capillaries
- D. None of these
Explanation
Arteries have the thickest and most muscular and elastic walls because they receive blood at high pressure directly from the ventricles. Students may choose veins because they are larger and may appear substantial, but veins carry blood at lower pressure and therefore have thinner walls.
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