Now consider a drug which is being constantly infused into a patient to establish a plasma concentration of 2mg/L. GFR in this patient is 150ml/min. The substance appears in the urine at a rate of 200µg/min. The substance is being filtered, and is not metabolised. What do we know about the handling of this substance in the nephron? Select 2 answers. O The substance must be reabsorbed. O The substance must not be reabsorbed. O We can't know from these data if the substance is being reabsorbed. The substance must be secreted. The substance must not be secreted. O We can't know from these data if the substance is being secreted.

Now consider a drug which is being constantly infused into a patient to establish a plasma concentration of 2mg/L. GFR in this patient is 150ml/min. The substance appears in the urine at a rate of 200µg/min. The substance is being filtered, and is not metabolised. What do we know about the handling of this substance in the nephron? Select 2 answers. O The substance must be reabsorbed. O The substance must not be reabsorbed. O We can't know from these data if the substance is being reabsorbed. The substance must be secreted. The substance must not be secreted. O We can't know from these data if the substance is being secreted.

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter48: Osmoregulation And Disposal Of Metabolic Wastes

Section: Chapter Questions

Problem 7TYU: Which of the following does not contribute to the high salt concentration in the interstitial fluid...

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Similar questions

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
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
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.
Reabsorption depends on _________. a. osmosis across the nephron wall b. active transport of sodium across the nephron wall c. a steep solute concentration gradient d. all of the above
As the text noted, two-thirds of the water and solutes that the body reclaims by reabsorption in nephrons occurs in the proximal tubule. Proximal tubule cells have large numbers of mitochondria and demand a great deal of oxygen. Explain why.
Figure 41.5 Which of the following statements about the kidney is false? The renal pelvis drains into the ureter. The renal pyramids are in the medulla. The cortex covers the capsule. Nephrons are in the renal cortex.
Water and small solutes enter nephrons during ________. a. filtration b. reabsorption c. secretion d. both a and b
Blood pressure forces water and small solutes out of blood and into nephrons during ________. a. glomerular filtration c. tubular secretion b. tubular reabsorption d. both a and c