Exam 4 Fall 2006

Exam 4 Fall 2006 - Examination IV VPHY 3100 Elements of...

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Examination IV VPHY 3100 Elements of Physiology Dec. 6, 2006 1:25 - 2:15 p.m. Multiple Choice (2.5 points each) CHOOSE THE BEST ANSWER 1. The blood vessel connects glomerular capillaries and peritubular capillaries is the: A. arcuate arteriole. B. interlobular arteriole. C. afferent arteriole. D. *efferent arteriole. 2. Which of the following structures are located ONLY in the renal medulla? A. Glomerulus. B. Proximal tubule. C. *Loop of Henle. D. Distal tubule. 3. In the absence of aldosterone, there will be no ____ in the urine. A. Na + . B. *K + . C. Ca ++ . D. Cl - . 4. Renal plasma clearance is defined as the volume of A. a substance filtered. B. *plasma cleared of a substance. C. filtrate cleared of a substance. D. plasma and filtrate cleared of a substance. 5. The PAH clearance rate of a person decreases from 750 ml per minute at rest to 500 ml per minute during exercise. This is because A. some of the PAH is reabsorbed during exercise. B. the PAH carriers are less effective during exercise. C. *the blood flow to the kidneys is reduced during exercise. D. the blood pressure is reduced during exercise. 6. Inhibition of the functions of the descending limb of the loop of Henle would: A. increase water reabsorption. B. *decrease water reabsorption. C. increase Na + reasbsorption. D. decrease Na + reabsorption. 7. The presence of renin secreting tumors may cause A. hypertension. B. increased aldosterone secretion. C. increased renal sodium reabsorption. D. *all of the above. 8. The tubular filtrate has the greatest osmolarity A. as it enters the proximal convoluted tubule. 1
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B. as it enters the distal convoluted tubule. C. *at the tip of the loop of Henle. D. as it exits the proximal convoluted tubule. 9. Renal regulation of blood plasma pH relies on A. the actions of the ammonia buffer. B. the actions of the potassium buffer. C. *the actions of the bicarbonate buffer. D. none of the above. 10. Which of the following substances is NEITHER reabsorbed NOR secreted by the renal tubular epithelium? A. *Serum albumin. B. Amino acids. C. Glucose. D. Urea. 11. In response to a reduced blood flow to kidneys, the granular cells of juxtaglomerular apparatus secrete: A. *renin. B.
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Exam 4 Fall 2006 - Examination IV VPHY 3100 Elements of...

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