What vessels sustain a drop in pressure from approximately 35 mm Hg to around 17 mm Hg
A) arterioles
B) veins
C) elastic arteries
D) capillaries
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Why is it important that blood pressure drop to lower levels as it reaches the capillary beds
A) Because capillaries depend on the lower pressure to prevent fluid exchange between the capillaries and the tissue fluid.
B) Because capillaries are fragile and extremely permeable
C) Because capillaries actually are high-pressure vessels.
D) Because capillaries actually need a higher blood pressure for filtration activities.
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Which of the following is true about veins
A) Veins have valves; arteries do not.
B) Veins carry blood away from the heart, while arteries carry blood to the heart.
C) Veins have a smaller diameter lumen than arteries.
D) Veins are more muscular than arteries.
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Vasodilation will result in increased blood flow to a given tissue.
True
False
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