Which of the following will promote vasodilation? A Epinephrine B Heat C Exercise D Angiotensin II Question 25 Which of the following vessels does not return blood to the right atrium of the heart? A Coronary sinus B Inferior vena cava C Superior vena cava D Pulmonary vein
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1. Pressure in the cardiovascular system would be lowest in the _______. a. arterioles b. capillaries c. vena cava d. venules 2. When the semilunar valves are open, then we can say that the pressure in the ventricles is ___________ the pressure in the atria. a. equal to b. higher than c. lower than 3. Think of Poiseuille's equation. The flow in a vessel would increase if the _____________. a. radius of the vessel decreased b. pressure in the vessels increased c. length of the vessel increased d. viscosity of the blood increased 4. A hose in your garden sprung a leak so you needed to replace it. The only spare you had was half the diameter of the leaky one, but it was better than nothing. You use that new hose to fill a bucket with water. The time it takes to fill the bucket is _________________________. a. longer with the new hose b. equal to that of the old hose c. shorter with the new hose 5. If you replaced your old hose with one that was of a narrowed diameter, the flow per minute would go ________. a. it would stay the same b. go down c. go up 6. Susie is taking a calcium channel blocking drug. (It does exactly that, it blocks some of the calcium channels in heart cells) What effect on her stroke volume would you expect this medication to have? a. Stroke volume goes down b. Stroke volume goes up c. Ejection is not possible d. Contractile force of heart goes up 7. Sheila had a sonogram done to look at her stroke volume. Her EDV was 125ml, her HR was 68bpm, and her ESV was 58. What was her stroke volume? a. 67 b. 39 c. 57 d. 183
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B. Matching 1. subclavian 2. superior mesenteric 3. popliteal 4. cephalic 5. common carotid 6. gonadal 7. valves 8. axillary 9. great saphenous 10. median cubital 11. hepatic portal vein 12. circle of Willis 13. celiac 14. brachiocephalic trunk A. artery in armpit B. artery with three branches C. vein frequently used for obtaining blood samples D. artery on right side only E. long vein of leg F. vein that carries deoxygenated blood to liver G. artery to large intestine H. cerebral anastomosis I. long vein of arm J. vein in knee K. artery to reproductive organ L. major artery in neck M. vein under clavicle N. structure found only in veins C. Short-Answer Questions 1. List the vessels involved in supplying and draining blood from the small and large intestines. 2. What is the function of valves in the peripheral veins? 3. Describe the major vessels that return deoxygenated blood to the right atrium of the heart. D. Drawing right axilla
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