Structure of Blood Vessels:
What are the functions of the elastic fibers that are found in the walls of arteries? (There may be more than one answer)
Select one or more:
a. they allow the artery to stretch and then recoil back to its original shape as blood is forcefully pumped from the heart into the arteries
b. they allow arteries to lengthen as the volume of blood in the arteries increase
c. they help maintain a steady blood pressure during the different phases of heart contraction
d. they smooth out the walls of the arteries to prevent turbulent blood flow
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