Imagine yourself sitting in an awkward position in an uncomfortable chair that is depriving part of your leg from normal blood flow. This deprivation of adequate perfusion will result in what sort of local changes in your leg?
A. Decreases in carbon dioxide and hydrogen ions will cause vasodilation.
B. Buildup of carbon dioxide and hydrogen ions will cause vasoconstriction.
C. Buildup of carbon dioxide and hydrogen ions will cause vasodilation.
D. Decreases in oxygen and potassium will cause vasoconstriction.
E. Increases in oxygen and potassium will cause vasodilation.
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Question 2) The respiratory pump assists blood movement within the veins of the trunk, because as a person inspires,
A. intra-abdominal and intrathoracic pressure both increase.
B. intra-abdominal and intrathoracic pressure both decrease.
C. intra-abdominal pressure increases and intrathoracic pressure decreases.
D. intra-abdominal pressure decreases and intrathoracic pressure increases.
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Question 3) Angiogenesis
A. is a momentary chemical control of local blood flow.
B. involves muscular constriction of arterioles to alter local perfusion.
C. allows for an increase in the perfusion of a local tissue.
D. involves building new muscle tissue and decreasing the amount of blood vessels in a region.
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Question 4) A vasodilator causes a decrease in local blood flow at a capillary bed.
Indicate whether this statement is true or false.
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Question 5) If someone's blood pressure were listed as 110/65 mmHg, then their mean arterial pressure (MAP) would be
A. 70 mmHg.
B. 80 mmHg.
C. 90 mmHg.
D. 100 mmHg.
E. 110 mmHg.
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Question 6) The formation of new blood vessels is a process known as __________.
Fill in the blank with correct word.
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Question 7) At a capillary bed, a vasoconstrictor
A. constricts local arterioles, thereby increasing pressure and increasing local blood flow.
B. stimulates precapillary sphincters and decreases local blood flow.
C. dilates local arterioles, thereby increasing pressure and increasing local blood flow.
D. inhibits precapillary sphincters to relax and decreases local blood flow.
E. constricts precapillary sphincters and thereby increases local blood flow.
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Question 8) Peripheral resistance is
A. directly related to both vessel length and radius.
B. inversely related to both vessel length and radius.
C. directly related to vessel length and inversely related to vessel radius.
D. inversely related to vessel length and directly related to vessel radius.
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Question 9) Although local blood flow to different organs varies from time to time (based on demand), the distribution of blood vessels in the various organs of the body is fairly similar.
Indicate whether this statement is true or false.
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Question 10) Blood hydrostatic pressure in systemic capillaries is greater than interstitial fluid hydrostatic pressure.
Indicate whether this statement is true or false.
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