Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 51.6, Problem 2R
Summary Introduction
To review:
The significance of the fact that sodium ion/potassium ion (Na+/K+) exchanger cause the secretion of two K+ ions for every three Na+ ions, it reabsorbs in the tubule cells.
Introduction:
Aldosterone is produced in response to the angiotensin and helps in maintaining blood pressure and reabsorbs sodium ions from the renal tubules. Aldosterone also have the roles in excreting potassium ions out of the cells.
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Life: The Science of Biology
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- Plasma fluid filtered into Bowmans capsule flows directly into the ________. a. renal artery c. distal tubule b. proximal tubule d. loop of Henlearrow_forwardAs a person ages, nephron tubules lose some of their ability to concentrate urine. What is the effect of this change?arrow_forwardAs 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.arrow_forward
- 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 ductarrow_forwardWhich 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) podocytesarrow_forwardThe afferent arteriole delivers blood to the (a) renal artery (b) efferent arteriole (c) renal vein (d) capillaries of the glomerulus (e) peritubular capillariesarrow_forward
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