vasculature study questions - intrinsic controls? 11....

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Vascular review questions 1. Define compliance. Why is it important that the aorta have high compliance? 2. What are the two main functions of arterioles? 3. What is the major function of capillaries? What is endothelium? How does it relate to endocardium? 4. Why are veins called capacitance vessels? Why do many of the veins have valves? 5. Explain this formula as it relates to blood flow. What do the variables represent? 6. Define mean arterial pressure (MAP). Define central venous pressure (CVP). 7. What is meant by a pressure gradient? What is its significance for the circulatory system? 8. In the formula in #5, what is the dominant influence on resistance in normal physiology? 9. What is TPR? What effect does it have on blood flow? 10. Explain the difference between intrinsic and extrinsic controls of vasoconstriction and vasodilation. What is the importance of
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Unformatted text preview: intrinsic controls? 11. Nearly all arterioles are innervated only by the sympathetic nervous system. What are the most prevalent adrenergic receptors found on arterioles? What is their effect upon activation, vasoconstriction or vasodilation? 12. By what means does the activation of 1 receptors result in vasoconstriction? Be complete in your answer. 13. By what means does the activation of 2 receptors result in vasoconstriction? Be complete in your answer. 14. Some arterioles have 2 receptors that have a high affinity for epinephrine. Where does epinephrine come from and what is its effect on arterioles with 2 receptors? How? 15. Define in terms of vascular pathology: a. stenosis b. ischemia c. angina d. thrombus e. embolism f. hypoxia g. anoxia h. infarction i. intermittent claudication j. aneurysm R P F =...
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This note was uploaded on 03/24/2008 for the course BIOL 141 taught by Professor Viti,janehartwel during the Spring '08 term at Pennsylvania State University, University Park.

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