Ch 11a Blood Vessels Practice quiz- B

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10 Terms

1
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  1. Veins

often have valves to prevent the backflow of blood

2
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  1. When precapillary sphincters are closed, blood bypasses that region. T/F

True

3
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  1. Which arteries have blue blood?

pulmonary

4
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  1. Veins have _ to prevent the backflow of blood.

valves

5
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  1. Blood from capillaries then goes to

venules

6
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  1. The vessel that drains blood from the digestive tract organs to the liver

hepatic portal vein

7
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  1. Which of the following promotes vasodilation and a decrease in blood pressure?

alcohol

8
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  1. What effect does the sympathetic nervous system have on the diameter of blood vessels?

vasoconstriction

9
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  1. The renal veins carry oxygen-rich blood to the kidneys. T/F

False

10
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  1. What organs are served by the renal arteries and veins?

kidneys