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in general, how do veins differ in structure from capillaries and arteries?
a...
Health, 28.01.2020 21:55 adalan6986
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in general, how do veins differ in structure from capillaries and arteries?
a. veins have more smooth muscle tissue than arteries and capillaries.
b. veins appear rounder in a cross section than arteries and capillaries.
c. veins have valves which are absent in arteries and capillaries.
d. veins have thinner inner walls than arteries and capillaries
Answers: 3
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