19. The structure of the artery aids its function via the following means:
a) The layer of collagen and elastic fibers in the outer wall is very thick to prevent bulges and leaks, or so the artery does not burst!
b) The thick wall of the artery withstands the high pressure of the blood found in the artery.
c) The lumen or space within the artery where blood travels is relatively narrow, which helps maintain the high pressure of the blood within the artery.
d) The thick layer of elastic, muscular tissues within the artery wall help pump the blood on after each heart beat!
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