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Exam 4 Fall 2004

Exam 4 Fall 2004 - Examination IV VPHY 3100 Elements of...

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Examination IV VPHY 3100 Elements of Physiology Dec. 10, 2004 1:25 - 2:15 p.m. Multiple Choice (2.5 points each) CHOOSE THE BEST ANSWER 1. In kidneys, afferent arterioles arise from the A. glomeruli. B. efferent arterioles. C. arcuate arteries. D. *interlobular arteries. 2. Glomerular filtration would be decreased by A. increased number of glomeruli. B. increased hydrostatic pressure in glomerular capillaries. C. *increased plasma protein concentration. D. increased mean arterial pressure. 3. When the afferent arteriole is stimulated by sympathetic nerves: A. the afferent arteriole dilates. B. *the afferent arteriole constricts. C. the GFR increases. D. there is no change in the GFR. 4. The majority of water reabsorption occurs in the A. *proximal convoluted tubule. B. distal convoluted tubule. C. loop of Henle. D. collecting duct. 5. Fluid in the distal convoluted tubule of the nephron is A. isotonic. B. hypertonic. C. *hypotonic. D. sometimes isotonic, sometimes hypertonic, and sometimes hypotonic. 6. Renal blood flow is best estimated by A. clearance of urea. B. *clearance of PAH. C. clearance of inulin. D. clearance of glucose. 7. Excessive aldosterone secretion would: A. *decrease plasma potassium. B. decrease plasma sodium. C. decrease plasma chloride. D. not change plasma ion balance. 8. (bad questions) Renin secretion is stimulated by A. *decreased blood flow to kidneys. B. *decreased blood sodium concentrations. 1
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C. decreased blood osmolality. D. decreased blood P O2 . 9. Which of the following statements about antidiuretic hormone is NOT correct? A. Antidiuretic hormone stimulates water reabsorption by the kidney. B. Antidiuretic hormone induces fusion of aquaporin containing vesicles with the plasma membrane. C. *Antidiuretic hormone is secreted by the adrenal cortex. D. Antidiuretic hormone is secreted in response to dehydration. 10. Renal tublules that are permeable to water but not permeable to salt include: A. *descending limb of loop of Henle and medullary collecting ducts. B.
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Exam 4 Fall 2004 - Examination IV VPHY 3100 Elements of...

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