Atherosclerosis is the narrowing of the artery because of plaque buildup. Arteriosclerosis is the stiffening or hardening of artery walls.
B. You probably shouldn’t touch them when they’re so agitated
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True, as there are flu shots wtc to stop you from contracting flu
The best answer for the blood vessels' valves would be these are veins that would then help in preventing the back flow of blood because the walls have small muscle to pump the blood back to the heart.Hope this is the answer.
