Which blood vessel has the thickest muscular wall?
Correct answer: C. Aorta
- A. Vena cava
- B. Pulmonary vein
- C. Aorta
- D. Capillary
Explanation
The aorta has the thickest wall to withstand the high pressure of blood ejected from the left ventricle.
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About Blood Vessels
Blood vessels include arteries, arterioles, capillaries, venules and veins, whose wall thickness, elasticity, lumen size and valves suit their roles in circulation. Questions compare pressure and blood flow in each vessel and distinguish pulmonary vessels, which carry blood to and from the lungs, from systemic vessels.
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