29. Which of the following statements about blood vessels is incorrect? a. More than % 60 of the blood in our body is found in the veins. b. Muscular arteries and arterioles have multiple layers of elastin fibers which gives them recoil-like property. c. Arterioles provide the greatest resistance to the blood flow. d. Veins have valves to prevent backflow of blood. e Regulations of diameters (vasocon striction/vasodilation)of arterioles is done by increased/decreased sympathetic nervous system activity.

Question

29. Which of the following statements about blood vessels is incorrect? a. More than % 60 of the blood in our body is found in the veins. b. Muscular arteries and arterioles have multiple layers of elastin fibers which gives them recoil-like property. c. Arterioles provide the greatest resistance to the blood flow. d. Veins have valves to prevent backflow of blood. e Regulations of diameters (vasocon striction/vasodilation)of arterioles is done by increased/decreased sympathetic nervous system activity.

Answer 1

The incorrect statement about blood vessels is:b. Muscular arteries and arterioles have multiple layers of elastin fibers which gives them recoil-like property.Explanation:Muscular arteries and arterioles do have some elastin fibers, but they are primarily composed of smooth muscle cells. The recoil-like property is mainly due to the elastic fibers found in the tunica media layer of larger arteries, such as the aorta and pulmonary arteries.

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