LAUNCHPAD F/WHAT IS LIFE
4th Edition
ISBN: 9781319231897
Author: PHELAN
Publisher: Macmillan Higher Education
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Chapter 21, Problem 9MC
Summary Introduction
Introduction:
The glomerulus is where the blood flows, to get filtered at the kidney.
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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.
Water moves out of the filtrate of the descending limb of the nephronloop becausea. there is a high concentration of solutes in the surrounding fluid.b. the cells of the descending limb are permeable to ions.c. the difference in the diameter of the arterioles creates a pressuregradient.d. there is a high concentration of solutes in the descending limb.
Glomerular filtration is a(n) __________ driven process.
a. osmosis
b. diffusion
c. ATP
d. relaxation
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- 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.arrow_forwardAs a person ages, nephron tubules lose some of their ability to concentrate urine. What is the effect of this change?arrow_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
- 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.arrow_forwardThe pores of the endothelial cells of the glomerular capillaries are called_________. Select one: a. gap junctions b. fenestrae c. membrane channels d. macula densa e. filtration slitsarrow_forwardWhich of the following statements about the nephron is false? a. The collecting duct empties into the distal convoluted tubule. b. The Bowman’s capsule surrounds the glomerulus. c. The loop of Henle is between the proximal and distal convoluted tubules. d. The loop of Henle empties into the distal convoluted tubule.arrow_forward
- Which of these processes is responsible for kidney function?a. filtration c. reabsorption e. All of these are correct.b. secretion d. Both a and b are correct.arrow_forwardWhich of the following rows correctly identifies the function of a region of the nephron? Nephron region and function Row Region of a nephron Function A. collecting duct secretion glomerulus filtration descending loop of Henle secretion ascending loop of Henle filtration Rowman's capsules? B. C. D. Select one: O a. A cb. B O c. C O d. Darrow_forwardwhich of the following correctly shows the order in which the filtrate moves through the structures of the nephron? a. proximal tubule - distal tubule - collecting duct - loop of Henle b. collecting duct - loop of Henle - proximal tubule - distal tubule c. distal tubule - loop of Henle - proximal tubule - collecting duct d. proximal tubule - loop of Henle - distal tubule - collecting ductarrow_forward
- Glomerular Filtration Rate (GFR) can be regulated by individual nephrons..which of the following represent the structures that play a role in this "Tubulo-Glomerular Feedback" mechanism? 45. ies, that A. The Corpus-Callosum and the Macula Densa. B. The Juxta-Glomerular Apparatus C. The Supra-Bowmanic Recipricator D. The Osmotic Filament Feedback Modulearrow_forwardThe cortical nephron is characterized by all of the following except: a. short nephron loop b. glomerulus is further from the cortex-medulla junction c. glomerulus is close to the cortex-medulla junction d. efferent arteriole supplies peritubular capillariesarrow_forwardMost absorption and secretion occurs in this part of the nephron. a. proximal convoluted tubule b. descending loop of Henle c. ascending loop of Henle d. distal convoluted tubule e. collecting ductsarrow_forward
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