Last_Years_Midterm_Finkelstein

Last_Years_Midterm_Finkelstein - Name _ TA _ MCDB 1B...

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Name _________________________ TA ________________________ MCDB 1B Midterm Examination I February 14, 2007 Scantron Instructions: 1. Use a #2 pencil to complete the form. 2. Write your name and fill in the appropriate bubbles. 3. Write your perm. number in the ID number box and fill in the bubbles. 4. Write the color of your test in the space underneath the ID number box. 5. Fill in the entire rectangle of the answer you choose. If you erase, erase completely READ ALL QUESTIONS THOROUGHLY----IN ALL CASES, PICK THE BEST ANSWER 36 Multiple Choice Questions - 2.5 Points Each 10 True False Questions - 1 Point Each 1. Which of the following structures in a vertebrate with a four-chambered heart would have blood with the lowest oxygen concentration? A. pulmonary vein B. pulmonary artery C. left atrium D. aorta E. arteriole end of a capillary 2. The atrioventricular node is necessary for the propagation of the depolarization wave through the heart because A. the SA and AV nodes are separated by nonconductive tissue B. the atria are separated by nonconductive tissue C. the ventricles are separated from the atria by nonconductive tissue D. it is where the heart receives input from the central nervous system E. only atrial cells are interconnected by gap junctions 3. Efficient transport of the respiratory gases A. is limited by the solubility of O 2 and CO 2 in the blood B. depends on specific protein carriers for both O 2 and CO 2 (hemoglobin and carbonic anhydrase, respectively) C. depends on reversible binding of O 2 and hemoglobin that is sensitive to the local [O 2 ] and pH D. depends on reversible binding of O 2 and hemoglobin that is sensitive to only the local [O 2 ] E. depends on active transport of these gases across plasma membranes 4. Which of the following does NOT increase blood flow through a capillary bed? A. high concentration of CO 2 B. high concentration of lactate C. high concentration of O 2 D. low pH E. increase in arterial pressure MCDB1B MT1 Yellow Version: 0 Page: 1
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5. As blood moves from the arteriole toward the venule end of a capillary bed A. the osmotic pressure of the blood decreases B. the blood hydrostatic pressure increases, resulting in net water loss to the surrounding tissues C. the blood hydrostatic pressure decreases, resulting in fluid loss toward the venous side D. net fluid loss at the arterial side exceeds fluid uptake at the venous side E. A and C 6. Which of the following factors forces materials out of glomeruli and into the Bowman's capsule of the kidney? A. active transport in cells of the glomerular capillaries B. active transport in cells of the Bowman's capsule C. higher solute content in the blood than in the capsule D. higher solute content in the capsule than in the blood E. pressure created by the beating of the heart 7. Which one of the following would be LEAST likely to be present in the filtrate entering a mammalian nephron? A. glucose
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This note was uploaded on 04/07/2008 for the course MCDB 1B taught by Professor Weimbs during the Spring '08 term at UCSB.

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Last_Years_Midterm_Finkelstein - Name _ TA _ MCDB 1B...

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