The wall of capillaries consists of
A) a layer of smooth muscle and an endothelium supported by a layer of areolar connective tissue.
B) tunica externa, tunica media, and an endothelium supported by a layer of areolar connective tissue.
C) an endothelium supported by a layer of areolar connective tissue.
D) tunica externa and an endothelium supported by a layer of areolar connective tissue.
Correct Answer:
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Q46: As arterioles constrict, peripheral resistance _ and
Q47: At the venular end of a capillary,
Q48: _ contain nearly 60% of the total
Q49: Valves are found in some
A)capillaries.
B)veins.
C)arteries.
D)arteries and veins.
Q50: The nerve impulses from the sympathetic neurons
Q52: An increase in _ nerve impulse frequency
Q53: The tunica media is found in
A)veins only.
B)arteries
Q54: The diastolic blood pressure is the lowest
Q55: The systolic blood pressure is the greatest
Q56: At the arteriolar end of a capillary,
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