bisc307 exam 3 %28sp. 05%2C byerly%29

bisc307 exam 3 %28sp. 05%2C byerly%29 - Third Exam BISC...

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Third Exam BISC 307L - General Physiology April 4, 2005 1. Answer all of the 13 questions. READ EACH CAREFULLY! 2. Note that questions have different point values. In all, 70 points are possible. 3. You have 50 minutes for this exam, about 7 minutes for a 10-point question. 4. Write your answer within the box or blank given for each question. Material written outside these spaces will not be graded. 5. Abbreviations used in lecture are acceptable. 6. Calculators are NOT allowed. 7. Show your work in solving quantitative problems. Partial credit will be given for correct procedure, even if answer is incorrect. 8. Make you answers as brief as possible. Points will be subtracted for irrelevant material. WRITE YOUR NAME ON EACH PAGE Your Name: _______________________________________________________ Please CIRCLE the Lab Section you are in : Tuesday morning Tuesday afternoon Wednesday morning Wednesday afternoon Thursday morning Thursday afternoon Friday morning Friday afternoon
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NAME ____________________________________ 1. (6 points) A blood vessel runs from A to B. At B it splits into two smaller vessels, which rejoin at C. The resistance of the vessel from A to B is 5 , while the resistances of the two smaller vessels are 15 and 30 . The blood pressure at A is 90 mmHg and that at C is 75 mmHg. A. What is the blood flow through the 5 vessel? B. What is the blood pressure at B? C. What is the blood flow through the 30 vessel? 1/R = 1/(15 ) + 1/(30 ); so R = 10 A. Q = (15 mmHg)/(15 ) = 1 liter/min B. P B = 90 mmHg – (1 l/min)x(5 ) = 85 mmHg C. Q = (10 mmHg)/(30 ) = 1/3 liter/min 2. (4 points) Blood vessel 1 has twice the diameter of vessel 2. Both vessels have the same length and drop of pressure from one end to the other. A. How does the blood flow through vessel 1 (Q 1 ) compare to that through vessel 2 (Q 2 )? B. How does the average velocity of the blood in vessel 1 (V 1 ) compare to that in vessel 2 (V 2 )? R = k r
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This note was uploaded on 05/03/2010 for the course BISC 307L taught by Professor Herrera during the Spring '08 term at USC.

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bisc307 exam 3 %28sp. 05%2C byerly%29 - Third Exam BISC...

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