Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 49, Problem 10TY
Summary Introduction
Introduction: A hormone, ADH controls the permeability of the collecting duct epithelial membrane by increasing the number of water channels. Water resorption in the kidney is influenced by ADH, along with aldosterone.
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To keep the proper concentrations of water and solutes in their blood, freshwater bony fish must drinka. lots of water and excrete large volumes of urine that are hypotonic to body fluids.b. no water and excrete large volumes of urine that are hypotonic to body fluids.c. lots of water and excrete large volumes of urine that are isotonic to body fluids.d. no water and excrete large volumes of urine that are isotonic to body fluids.
ADH causes cells of the kidneys to insert aquaporins (leak channels for water) into their membranes. It most likely does this by:
Group of answer choices
A. activating a second messenger system that leads to activation/insertion of the aquaporin
B. binding to DNA adjacent to genes that code for enzymes that make aquaporins
C. binding to genes adjacent to those that code for aquaporins and increasing their production
D. directly phosphorylating the aquaporins
Explain how the cycling of sodium chloride between the descending and ascending limbs of the loop of Henle in the mammalian kidney, and special permeability of these tubules, produces high osmotic concentrations in interstitial fluids in the kidney medulla. Explain the role of urea in producing high osmotic concentrations in the intersti-tial fluid of the medulla.
Chapter 49 Solutions
Biology
Ch. 49.1 - Prob. 1CCCh. 49.2 - Core Skill: Connections In what other organ is a...Ch. 49.2 - Prob. 2CSCh. 49.2 - Prob. 3CSCh. 49.3 - Prob. 1CSCh. 49 - Prob. 1TYCh. 49 - Prob. 2TYCh. 49 - Prob. 3TYCh. 49 - Prob. 4TYCh. 49 - Prob. 5TY
Ch. 49 - Prob. 6TYCh. 49 - Prob. 7TYCh. 49 - Prob. 8TYCh. 49 - Prob. 9TYCh. 49 - Prob. 10TYCh. 49 - Define nitrogenous waste, and list the main types...Ch. 49 - List and describe the three processes involved in...Ch. 49 - Prob. 3CQCh. 49 - Prob. 1COQCh. 49 - Briefly discuss the parts and functions of the...
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- 1. The diagram below shows a simple diagram of a nephron (kidney tubule): a) Identify the following parts... X: Y: Z: blood in blood sample A B C D water (3) b) Four places in the nephron and its blood supply are labelled A, B, C and D. State whether these substances are present or absent from these blood samples by placing a tick or cross in the box. (10) B urea D protein glucose saltarrow_forwardThe mammalian kidney contains an immense network of nephrons that functions to conserve water by producing urine that is hyperosmotic compared to other body fluids. Describe in detail how the transport epithelia of the nephron and collecting duct are able to use transport mechanisms to process the filtrate as it moves through the vessels and produce a hyperosmotic filtrate.arrow_forwardThe blood cells and fibrinogen was detected in the urine of 35-year-old woman with kidney disease. It was probably associated with the renal filter function. What is the structural composition of this filter? a. Endothelium of capillaries, basement membrane O b. Endothelium, podocytes c. Podocytes, basement membrane d. Three-layer basement membrane e. Endothelium of glomerular capillaries, three-layered basement membrane, podocytesarrow_forward
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