Vascular_Physiology_Study_Questions - Vascular Physiology...

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Vascular Physiology Study Questions (select the single BEST answer) 1. The innermost layer of blood vessels is A) smooth muscle B) endothelium C) connective tissue 2. Because arteries are elastic, they recoil and maintain an arterial blood pressure when the heart is relaxing. A) true B) false 3. Which of the following has less smooth muscle and is thinner walled than the other vessel type? A) arteries B) veins 4. Which of the following decreases flow? A) increased resistance B) increased pressure gradient (∆P) C) both A and B D) neither A nor B 5. Which of the following increases resistance? A) decreased viscosity B) increased vessel radius C) both A and B D) neither A nor B 6. Changes in total peripheral resistance are due to changes in which vessel type? A) arteries B) arterioles C) capillaries D) veins E) venules 7. The pressure driving blood into the tissues throughout the cardiac cycle is the A) pulse pressure B) systolic pressure C) diastolic pressure D) mean arterial pressure 8. Exchange takes place between the blood and the interstitial fluid at the A) arteries B) veins C) arterioles D) capillaries 9. Which of the following is most important in extrinsic control of total peripheral resistance? A) parasympathetic nerve activity B) sympathetic nerve activity C) both A and B D) neither A nor B 10. During active hyperemia, __________ O 2 causes _________arteriolar radius which __________ flow in the organ. A) decreased, decreased, decreases B) increased, increased, increases C) decreased, increased, increases D) decreased, decreased, increases 11. Velocity of blood flow is ___________ in the capillaries. A) fastest B) slowest 12. Mean arterial pressure = _________ X ________ A) diastolic pressure, systolic pressure B) pulse pressure, diastolic pressure C) diastolic pressure, total peripheral resistance D) cardiac output (CO), total peripheral resistance (TPR) 13. Which of the following moves into or out of the capillary by diffusion through the endothelial cells? A) proteins B) water soluble solutes C) CO 2 and O 2 D) all of the above 14. Given the following, what is the net filtration pressure? capillary hydrostatic pressure = 25 mmHg capillary colloid osmotic pressure = 25 mmHg interstitial fluid colloid osmotic pressure = 3 mmHg interstitial fluid hydrostatic pressure = 0 mmHg A) 0 mmHg B) 3 mm Hg C) 25 mmHg D) 47 mmHg E) 53 mmHg
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15. All of the following will cause edema except A) lymphatic blockage B) decreased plasma proteins C) increased interstitial fluid proteins D) decreased capillary blood pressure 16. All of the following increase venous return except A) effect of gravity on the venous system B) respiratory activity C) skeletal muscle contractions D) constriction of veins 17. Which vessels are highly compliant, act as our "blood reservoirs", and can constrict during hemorrhage to help maintain arterial blood pressure? A) capillaries B) veins C) both A and B D) neither A nor B 18. Skeletal muscle contractions in the legs empty segments of leg veins and decrease the
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This note was uploaded on 03/18/2008 for the course PSL 250 taught by Professor Denison during the Spring '08 term at Michigan State University.

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Vascular_Physiology_Study_Questions - Vascular Physiology...

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