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Title: The walls of veins are thinner than those of corresponding arteries, because ________. Post by: victrous on Dec 16, 2017 The walls of veins are thinner than those of corresponding arteries, because ________.
A) veins contain a lower proportion of smooth muscle fibers B) of only arteries can perform vasoconstriction C) veins contain a greater proportion of elastic fibers and collagen D) blood pressure is higher in veins E) the lumen of veins is much smaller than the lumen of arteries of similar diameter Title: Re: The walls of veins are thinner than those of corresponding arteries, because ________. Post by: JacobF on Dec 16, 2017 Content hidden
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