exam%202%20bi80%202006

exam%202%20bi80%202006 - NAME _ ID #_ BI080 Exam 2 October...

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NAME _______________________ ID #______________ BI080 Exam 2 October 31, 2006 Please write your name on every page of the exam and your ID number on this first page. There are a total of 100 points. Multiple-choice are worth 3 points each. Point allocations for the short answer section are noted next to each question. Please confine your answers to the space provided for the written responses. Good Luck. 1. Compared to the systemic circulation, the pulmonary circulation has a) veins with higher oxygen levels b) a higher blood pressure. c) a smaller cardiac output d) More than one of the above. 2. Ventricular muscle cells in the septum of the heart a) depolarize first and repolarize first b) depolarize first and repolarize last c) have shorter calcium plateaus than muscle cells near the outside top of the ventricle d) More than one of the above 3. A malfunctioning left atrioventricular valve that did not close fully would result in a a) heart murmur heard during ventricular systole. b) heart murmur heard during ventricular diasystole. c) leaking of blood from aorta back into the ventricle d) greater stroke volume 4. Repolarization of a ventricular muscle cell is caused by a) closing of the L-type calcium channels. b) opening of potassium channels c) inactivation of sodium channels d) More than one of the above 5. The very beginning of ventricular systole a) involves isovolumetric relaxation. b) corresponds to the p-wave of the EKG. c) corresponds to the point at which the aortic valve closes. d) corresponds to the point at which ventricular volume is greatest. 6. Which of the following would cause an increase in the synthesis of nitric oxide in the endothelial
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This note was uploaded on 04/09/2008 for the course BIOL 80 taught by Professor Stein during the Spring '08 term at Brown.

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exam%202%20bi80%202006 - NAME _ ID #_ BI080 Exam 2 October...

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