ANAT.+PHYSIO.2-LAB.MAN. >CUSTOM<
20th Edition
ISBN: 9781264303090
Author: VanPutte
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 26, Problem 19RAC
Summary Introduction
Introduction:
A nephron is the histological and functional unit of the kidney. It is a tube-like structure with enlarged terminal ends. It includes Bowman’s capsule, proximal tubules, a loop of Henle and distal tubules. It plays a pivotal role in several homeostatic processes including the reabsorption of sodium chloride and potassium secretion.
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Which of the following is true about the filtrate as it travels through the tubule?
A. as the permeability to water of the collecting duct increases, the osmolarity of the filtrate increases
B. it decreases in osmolarity as it travels through the proximal tubule
C. the increasing concentration of the medullary interstitium results in more water being reabsorbed in the ascending limb
D. the volume of the filtrate decreases the most in the distal convoluted tubule and collecting duct
At which of these sites is the osmolality of the filtrate at its lowest(lowest concentration)?a. glomerular capillary d. initial section of the distalb. proximal convoluted tubule convoluted tubulec. bend of the loop of Henle e. collecting duct
Which of the following would reduce the glomerular filtration rate?
Select one:
a. Vasodilation of the afferent arteriole
b. An increase in osmotic pressure in the Bowman capsule
c. A drop in colloid osmotic pressure
d. Vasoconstriction of the afferent arteriole
e. Vasoconstriction of the efferent arteriole
Chapter 26 Solutions
ANAT.+PHYSIO.2-LAB.MAN. >CUSTOM<
Ch. 26.1 - Name the organs that make up the urinary system.Ch. 26.1 - List the functions performed by the kidneys, and...Ch. 26.2 - Describe the location, Size, and shown of the...Ch. 26.2 - Describe the renal capsule and the structures that...Ch. 26.2 - List the structures found at the hilum and in the...Ch. 26.2 - What is the functional unit of the kidney? Name...Ch. 26.2 - Distinguish between cortical and juxtamedullary...Ch. 26.2 - List the components of a renal corpuscle.Ch. 26.2 - Describe the structure of the Bowman capsule, the...Ch. 26.2 - Describe the structure of the afferent and...
Ch. 26.2 - Describe the structure and location of the...Ch. 26.2 - Explain blood supply for the kidney.Ch. 26.3 - Name the three general processes involved in...Ch. 26.3 - Contrast the rates of renal blood flow, renal...Ch. 26.3 - Prob. 15AYPCh. 26.3 - What is filtration pressure? How does glomerular...Ch. 26.3 - How do systemic blood pressure and afferent...Ch. 26.3 - Describe autoregulation.Ch. 26.3 - Prob. 19AYPCh. 26.3 - What is the direction of movement of substances in...Ch. 26.3 - Describe what happens to most of the filtrate that...Ch. 26.3 - On what side of therenal tubule cell does active...Ch. 26.3 - Describe how symportworks in the renal tubule.Ch. 26.3 - Name the substances that are moved by active and...Ch. 26.3 - Prob. 25AYPCh. 26.3 - Where does tubular secretion take place? What is...Ch. 26.3 - What substances are secreted? List the mechanisms...Ch. 26.3 - List the major mechanisms that create and maintain...Ch. 26.3 - Describe the roles of the loop of Henle, the vasa...Ch. 26.3 - Describe how the filtrate volume and concentration...Ch. 26.4 - Prob. 31AYPCh. 26.4 - How is angiotensinII activated? What effects does...Ch. 26.4 - Where is aldosterone produced? What factors...Ch. 26.4 - What are the effects of aldosterone on Na+ and CI+...Ch. 26.4 - Where is ADH produced? What factors stimulate an...Ch. 26.4 - How does ADH affect urine volume and...Ch. 26.4 - Describe how the presence of ADH causes the...Ch. 26.4 - How does the absence of ADH cause the production...Ch. 26.4 - Where is atrial natriuretic hormone produced,and...Ch. 26.5 - What is plasma clearance, and how is it...Ch. 26.5 - Prob. 41AYPCh. 26.5 - Describe how PAH is used to determine renal plasma...Ch. 26.5 - Explain the significance of tubular load and...Ch. 26.6 - What are the functions of the ureters, urinary...Ch. 26.6 - Prob. 45AYPCh. 26.6 - Prob. 46AYPCh. 26.6 - Prob. 47AYPCh. 26.6 - Prob. 48AYPCh. 26.7 - Discuss the effect of aging on the kidneys. Why do...Ch. 26 - Prob. 1RACCh. 26 - Prob. 2RACCh. 26 - Prob. 3RACCh. 26 - Prob. 4RACCh. 26 - Prob. 5RACCh. 26 - Prob. 6RACCh. 26 - Prob. 7RACCh. 26 - Prob. 8RACCh. 26 - If the glomerular capillary pressure is 40 mm Hg,...Ch. 26 - Prob. 10RACCh. 26 - Prob. 11RACCh. 26 - Prob. 12RACCh. 26 - Prob. 13RACCh. 26 - Prob. 14RACCh. 26 - Prob. 15RACCh. 26 - Prob. 16RACCh. 26 - Prob. 17RACCh. 26 - Which of the following contributes to the...Ch. 26 - Prob. 19RACCh. 26 - Prob. 20RACCh. 26 - Prob. 21RACCh. 26 - Prob. 22RACCh. 26 - ADH governs the a. Na+ pump of proximal convoluted...Ch. 26 - Prob. 24RACCh. 26 - The amount of a substance that passes through the...Ch. 26 - Prob. 26RACCh. 26 - Prob. 1CTCh. 26 - Harry is doing yard work one hot summer day and...Ch. 26 - Prob. 3CTCh. 26 - Prob. 4CTCh. 26 - Design a kidney that can produce hypostatic urine,...Ch. 26 - If only a very small amount of urea, instead of...Ch. 26 - Prob. 7CTCh. 26 - Marvin was driving too fast on a remote mountain...Ch. 26 - Which of the following will help compensate for...Ch. 26 - Renin-secreting tumors are usually found in the...Ch. 26 - Prob. 11CT
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- The afferent arteriole delivers blood to the (a) renal artery (b) efferent arteriole (c) renal vein (d) capillaries of the glomerulus (e) peritubular capillariesarrow_forwardWhich 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_forwardAs a person ages, nephron tubules lose some of their ability to concentrate urine. What is the effect of this change?arrow_forward
- During urine formation, movement of ions against concentration gradient from glomerular iltrate back into the plasma is called: a. Difusion b. Active transport c. Osmosis d. Filtrationarrow_forwardGlomerular 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)arrow_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
- 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…arrow_forwardA histological specimen of kidney shows a structure which consist of a glomerulus with fenestrated capillaries and bilayer epithelial capsule. Specify this structure: a. Collecting tubules b. Distal tubule c. Renal corpuscle d. Henle's loop e. Proximal tubulearrow_forwardIn the kidneys where does most of the tubular reabsorption occur a. Proximal convoluted tubule b. Collecting duct c. Glomerulus d. Distal convoluted tubulearrow_forward
- Which direction of movement correctly describes how the term "reabsorption" functions in the nephron? A. from the capillaries of the vasa recta into the renal tubule lumen B. from the collecting duct into the ureter C. from the renal artery into the collecting duct D. from the renal tubule lumen into the surrounding interstitial fluid E. from the afferent arteriole into the glomerulusarrow_forwardConstriction of the efferent arteriole of the renal corpuscle will cause ________________ to rise. A. Glomerular Osmotic Pressure B. Glomerular Hydrostatic Pressure C. Capsular Osmotic Pressure D. Capular Hydrostatic Pressurearrow_forwardWhich of the following is NOT a factor affecting glomerular filtration? a. blood volume b.fenestrae c. renin d hydrostatic pressure e . erythropoietinarrow_forward
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