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Physiology Practice Test: The Cardiovascular System - Blood Vessels, Blood Flow, and Blood Pressure
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Physiology Practice Test: The Cardiovascular System - Blood Vessels, Blood Flow, and Blood Pressure
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25 Questions

1. The factor having the greatest influence on resistance to blood flow is the radius of the blood vessels.
2. Which of the following is NOT a mechanism that alters the balance between filtration and absorption in the body?
3. What is the driving force for blood flow through the systemic circuit?
4. Which of the following is NOT altered within seconds to minutes of the baroreceptor reflex being activated?
5. Which of the following accurately compares active hyperemia to reactive hyperemia?
6. In response to a decrease in tissue metabolic activity, tissue oxygen concentrations ________, which causes a(n) ________.
7. Which of the following equations correctly relates flow, pressure, and resistance?
8. Which of the following is an INCORRECT description of a blood vessel type?
9. An increase in venous pressure can cause edema.
10. Walls of fenestrated capillaries are more permeable than the walls of continuous capillaries.
11. Flow through the pulmonary circuit is less than that through the systemic circuit due to a smaller pressure gradient.
12. Arteries have ________ compliance and ________ resistance.
13. The increase in blood flow to active skeletal muscle relative to other organs is largely caused by the ________.
14. Arteriolar smooth muscle in what tissue tends to have beta2 receptors?
15. The portion of osmotic pressure exerted by ________ in the blood is known as colloid osmotic pressure.
16. Under normal conditions, which Starling forces favor filtration?
17. Glucose moves across continuous capillary walls by what mechanism?
18. Which of the following statements about smooth muscle in arterioles is FALSE?
19. The total cross-sectional area is greatest in which blood vessels?
20. Exchange between blood and interstitial fluid occurs across capillaries and, to a lesser extent, ________.
21. Foreign materials are filtered out of the lymphatic fluid by what type of cell located within the lymph nodes?
22. As mean arterial pressure increases, the ________, informing the medulla oblongata that blood pressure has indeed increased.
23. Which of the following describes rhythmic changes in sympathetic and parasympathetic activity that affect heart rate coincident with respiration?
24. An increase in blood flow to metabolically active tissue is called reactive hyperemia.
25. What organ has capillaries that are the most restrictive to movement of hydrophilic solutes?