Why are sphincters found in some arterioles

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Assignment:

Cardiovascular: Blood Vessels 7. Blood vessels: arteries

a) define the term artery and give its function

b) know the different names for arteries as they move further away from the heart

c) do arteries ALWAYS carry oxygenated blood? What vessel is the exception?

d) why are sphincters found in some arterioles? What is their function?

e) understand the terms vasoconstriction and vasodilation and what layer of the artery is allowing those processes to happen. What part of the nervous system controls vasoconstriction and vasodilation?

f) Why do arteries experience higher pressures than veins?

Reference no: EM133613069

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