Renal_Physiology_Study_Questions

Renal_Physiology_Study_Questions - Renal Physiology Study...

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Renal Physiology Study Questions (select the single BEST answer) 1. The kidneys A) get rid of wastes B) help maintain homeostasis C) both A and B D) neither A nor B 2. The glomerular filtrate must pass through A) capillary pores B) a basement membrane C) the podocyte layer (through slits) D) A and C E) A, B, and C 3. In which of the following do substances move from the peritubular capillaries into the tubular fluid? A) glomerular filtration B) tubular reabsorption C) tubular secretion 4. Glomerular capillaries are _________ permeable and have a __________ hydrostatic (blood) pressure than typical capillaries. A) less, lower B) more, lower C) less, higher D) more, higher 5. The first step in urine formation is A) tubular reabsorption B) tubular secretion C) glomerular filtration 6. In a normal person, glomerular filtration rate is about 3 L/day, therefore the plasma is filtered through the kidneys once each day. A) true B) false 7. Which of the following would increase glomerular filtration rate? A) constriction of the afferent arteriole B) decreased glomerular hydrostatic pressure C) both A and B D) neither A nor B 8. Which of the following does NOT normally pass through the glomerular membrane during glomerular filtration? A) protein B) glucose C) Na + D) K + E) A and B 9. In diabetes mellitus, glucose appears in the urine because A) the carriers for glucose in people with diabetes mellitus are abnormal B) the glucose concentration in the blood is increased above normal and T m is exceeded C) both A and B D) neither A nor B 10. In the proximal tubule, when Na + and other substances are reabsorbed, this creates an osmotic gradient for water and water is also reabsorbed. A) true B) false 11. If the amount of a substance is greater in the urine than the amount that was filtered, the substance had to be secreted. A) true B) false 12. All of the following are substances that are secreted except A) H + B) K + C) penicillin D) water 13. In secondary active transport, _________ gets a "free ride" into the cell (against a concentration gradient) because __________ is actively transported out of the cell (and its concentration is kept low in the cell). A) Na + , glucose B) glucose, Na + 14. The countercurrent mechanism, which produces an increasingly concentrated interstitial fluid from the cortex to the medulla of the kidney, relies on the permeability of the ____________ limb of the loop of Henle to water and active transport of Na + out of the ______________ limb of the loop of Henle. A) ascending, descending B) descending, ascending 1
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15. The "vertical osmotic gradient" (or the increasingly concentrated interstitial fluid from the cortex to the medulla) of the kidney is ineffective when ADH is absent and urine osmolarity is _________. A) low B) high 16. In which segment of the nephron listed would osmolarity of the tubule fluid be highest? A) proximal tubule
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Renal_Physiology_Study_Questions - Renal Physiology Study...

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