What function do collagen and elastin have in arteries?
A) They provide elastic rebound of the arterial wall to help smooth out blood flow.
B) They help to control blood flow within the body by contracting with the smooth muscles in the arterial wall.
C) They line the interior to provide a smooth surface for blood flow.
D) They form valves to prevent the backflow of blood.
E) All of these choices are correct.
Correct Answer:
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