1. collecting duct 2. glomerulus 3. peritubular capillaries 4. distal convoluted tubule m. a. b. C. d. e. k. -5. proximal convoluted tubule 6. cortical radiate artery glomerular capsule 8. arcuate artery 9. cortical radiate vein 10. efferent arteriole 11, arcuate vein h. 12. nephron loop g. 13. afferent arteriole

1. collecting duct 2. glomerulus 3. peritubular capillaries 4. distal convoluted tubule m. a. b. C. d. e. k. -5. proximal convoluted tubule 6. cortical radiate artery glomerular capsule 8. arcuate artery 9. cortical radiate vein 10. efferent arteriole 11, arcuate vein h. 12. nephron loop g. 13. afferent arteriole

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter41: Osmotic Regulation And Excretion

Section: Chapter Questions

Problem 2VCQ: Figure 41.6 Which of the following statements about the nephron is false? The collecting duct...

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Which of the following does not contribute to the process of filtration? (a) active transport by epithelial cells lining renal tubules (b) large surface area for filtration (c) low permeability of glomerular capillaries (d) high hydrostatic blood pressure in glomerular capillaries (e) podocytes
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1. The outer one-third of the kidney is called the A. Medulla B. Minor calyces C. Renal pyramid D. Cortex
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Figure 41.6 Which of the following statements about the nephron is false? The collecting duct empties into the distal convoluted tubule. The Bowman’s capsule surrounds the glomerulus. The loop of Henle is between the proximal and distal convoluted tubules. The loop of Henle empties into the distal convoluted tubule.
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Which of the following correctly describes a part of kidney function? a. Collecting ducts dilute urine because they are permeable tosalt but not water. b. In the ascending loop of Henle, Na1 and Cl2 move into thetubules because the osmolarity of the filtrate is increased. c. The descending loop of Henle receives filtrate from theascending loop. d. The distal convoluted tubule pumps water into the tubule byactive transport. e. The renal pelvis receives urine from the collecting ducts andcarries it to the ureters.
Most absorption and secretion occurs in this part of the nephron. proximal convoluted tubule descending loop of Henle ascending loop of Henle distal convoluted tubule collecting ducts
Which of the following does not contribute to the high salt concentration in the interstitial fluid of the kidney medulla? (a) active transport of sodium from the upper part of the ascending limb (b) diffusion of salt from the ascending limb of the loop of Henle (c) reabsorption of salt from various regions of Bowmans capsule (d) counterflow of fluid through the two limbs of the loop of Henle (e) diffusion of urea out of the collecting duct
Which of the following statements about the kidney is false? a. The renal pelvis drains into the ureter. b. The renal pyramids are in the medulla. c. The cortex covers the capsule. d. Nephrons are in the renal cortex.
Glomerular filtration can be increased by which of the following? A. Increasing blood flow via afferent arteriole B. Decreasing blood flow via afferent arteriole C. Decreasing arterial blood pressure D. Increasing blood flow via efferent arteriole The answer is (A) Increasing blood flow via afferent arteriole. Please explain why it is not the other options (B,C,D)
If the glomerular filtration rate is too high: A) Needed substances cannot be reabsorbed quickly enough and are lost in the urine B) The filtrate passes through the nephron tubules without secretion C) Little or nothing is reabsorbed and the urine is high in ammonia and uric acid D) The filtrate passes through the nephron tubules more slowly than normal E) None of these answers is correct