GR - Blood, Heart, and Circulation IV

GR - Blood, Heart, and Circulation IV - Guided Reading...

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1. What is the role of serotonin in blood clotting? A. causes platelets to become sticky B. enhances the platelet release reaction C. causes vasoconstriction of blood vessels to slow loss of blood D. converts fibrinogen to fibrin 2. The annuli fibrosi are rings of epithelial tissue that support the heart valves. True False 3. The T wave of the ECG represents atrial repolarization. True False 4. Blood pH should be between 7.55 - 7.65. True False 5. Statins A. inhibit HMG-coenzyme A reductase. B. stimulate proconvertin. C. inhibit streptokinase. D. All of the choices are correct. 6. All blood vessels are lined with A. the tunica externa. B. smooth muscle. C. endothelial cells. D. elastin. 7. Cardiac ________ channels are called hyperpolarization cyclic nucleotide (HCN) channels because they open in response to hyperpolarization. A. atrial B. Purkinje C. pacemaker D. ventricular 8. The capillaries' function is exchange of gases, nutrients, and wastes with the tissues. True False
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This note was uploaded on 03/20/2012 for the course MCB 32 taught by Professor Smiley during the Fall '11 term at Cal Poly.

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GR - Blood, Heart, and Circulation IV - Guided Reading...

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