BIOLOGY-TEXT
BIOLOGY-TEXT
5th Edition
ISBN: 9781260169621
Author: BROOKER
Publisher: MCG
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Chapter 49, Problem 6TY
Summary Introduction

Introduction: Waste materials such as excess metabolic wastes, excess ions, excess water, and toxic substances need to be removed from the body of the organism as the accumulation of such materials is harmful to the organism. This process is called excretion. Urination is a mode of excretion and has three steps: filtration, reabsorption and secretion.

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The forces that oppose glomerular filtration are:   W. osmotic force of proteins in the glomerular capillariesX. blood pressure in the glomerular capillariesY. fluid pressure in Bowman’s capsuleZ. ATP-dependent processes in the nephron Select one: a. if only W, X and Y are correct b. if only W and Y are correct c. if only X and Z are correct d. if only Z is correct e.   if all are correct
All of the following statements about Juxtamedullary nephrons are correct EXCEPT their glomeruli lie in the renal medulla. a. b. are important in the ability of the kidneys to concentrate urine. C. Their loops of Henle dip deep into the medulla. d. they are not the predominant type of nephron found in human kidneys. Vasa recta.surround the tubule of the nephron. e.
Which one of the following statements is false?a. Blood pressure in the glomerular capillaries is greater than the osmotic pressure exerted by proteins in the plasma within the glomerular capillaries.b. If the osmotic pressure exerted by solutes in the peritubular capillaries is greater than the blood pressure in those capillaries, then water will be reabsorbed.c. Endothelial cells in glomerular capillaries are highly permeable, facilitating filtration of fluid into Bowman’s capsule.d. Constriction of the afferent arteriole is likely to reduce the volume of filtrate appearing in Bowman’s capsule.e. The efferent arteriole carries blood from the glomerular capillaries directly to the renal vein.0.5 pointsQuestion 2Your doctor calls with the results of your urinalysis and tells you that they found proteinuria, the presence of abnormal amounts of protein in your urine sample. What could have caused this?a. Infection and inflammation in the kidney.b. Abnormally high concentration of plasma…
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