Veins
A. carry blood away from the heart.
B. carry blood under very high pressure.
C. may contain valves and are lined with endothelium.
D. are described as strong, rigid vessels that always carry oxygenated blood.
E. have thick, many layered walls.
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Question 2) When contrasting arteries and veins, which of the following statements is true?
A. Veins have thicker walls than arteries.
B. Arteries have a thicker tunica media than veins.
C. Veins have a tunica media while arteries do not.
D. Arteries have valves, but veins do not.
E. Arteries have smooth muscle in their walls, but veins do not.
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Question 3) Valves similar to the semilunar valves of the heart are found in medium and large
A. arteries.
B. arterioles.
C. capillaries.
D. venules.
E. veins.
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Question 4) Arteries can constrict or dilate as needed because of the smooth muscle found in the
A. tunica intima.
B. tunica media.
C. tunica adventitia.
D. tunica externa.
E. tunica interna.
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Question 5) Which of the following best describes arteries?
A. strong, rigid vessels that carry blood under high pressure
B. thin, elastic vessels that transport blood under low pressure
C. elastic vessels that connect arterioles and venules
D. fragile vessels that are prone to rupture.
E. strong, elastic vessels that carry blood under high pressure
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Question 6) The blood vessels that are under the greatest pressure are the
A. arterioles.
B. capillaries.
C. elastic arteries.
D. veins.
E. venules.
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Question 7) Which of the following statements concerning blood vessel walls is true?
A. The tunica intima is the innermost layer of a blood vessel wall.
B. The tunica media is found in all blood vessels except veins.
C. The tunica adventitia is composed of smooth muscle and endothelium.
D. Capillaries have both a tunica intima and a tunica media.
E. Vessel diameter is controlled primarily by the tunica intima.
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Question 8) Which of the following functions is associated with vessels that carry blood directly from arterioles to veins without passing through capillaries?
A. thermoregulation
B. nutrient supply to tissues
C. removal of metabolic waste products from tissues
D. oxygen supply to tissues
E. pH regulation
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Question 9) Which coat of an artery contains endothelium?
A. tunica intima
B. tunica media
C. tunica adventitia
D. tunica elastica
E. tunica intermedia
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Question 10) Which kind of vessel provides a bypass for a capillary bed?
A. sinusoid
B. portal vein
C. thoroughfare channel
D. vasa vasorum
E. metarteriole
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