CONNECT ACCESS FOR BIOL 01204 <C>
12th Edition
ISBN: 9781264443123
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 49, Problem 1A
Summary Introduction
Introduction:
A variety of organs and mechanisms have been evolved in the animals that allow them to cope up with the problems of water balance and excretion of nitrogenous waste. In many animals, removal of salts or water from the body is linked with the
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You are studying renal function in different species of mammals that are found in very different environments. You look at species from a desert environment and compare them with ones from a tropical environment. The desert species would be expected to havea. shorter loops of Henle than the tropical species.b. longer loops of Henle than the tropical species.c. shorter proximal convoluted tubules than the tropical species.d. longer distal convoluted tubules than the tropical species.
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Chapter 49 Solutions
CONNECT ACCESS FOR BIOL 01204 <C>
Ch. 49.1 - Prob. 1LOCh. 49.1 - Prob. 2LOCh. 49.2 - Identify the relative toxicity and solubility of...Ch. 49.3 - Prob. 1LOCh. 49.3 - Define reabsorption and secretion.Ch. 49.4 - Prob. 1LOCh. 49.4 - Explain the role of the loop of Henle in the...Ch. 49.5 - Prob. 1LOCh. 49.5 - Prob. 2LOCh. 49.5 - Prob. 3LO
Ch. 49.6 - Prob. 1LOCh. 49.6 - Prob. 2LOCh. 49 - Prob. 1DACh. 49 - Which of the following is NOT an ion...Ch. 49 - Prob. 2UCh. 49 - A sharks blood is isotonic to the surrounding...Ch. 49 - An important function of the excretory system is...Ch. 49 - Which of the following is a function of the...Ch. 49 - Humans excrete their excess nitrogenous wastes as...Ch. 49 - An osmoregulator would maintain its internal...Ch. 49 - Prob. 1ACh. 49 - A viral infection that specifically interferes...Ch. 49 - Diuretics are drugs that can be used to treat high...Ch. 49 - Caffeine inhibits the secretion of ADH. Prior to...Ch. 49 - You and your study partner want to draw the...Ch. 49 - You are studying renal function in different...Ch. 49 - Prob. 1SCh. 49 - Johns doctor is concerned that Johns kidneys may...
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- Regulation of physiological variables occurs primarily through mechanisms. a. negative feedback b. positive feedback c. urine formation d. feedforward e. myogenicarrow_forwardMany caffeinated beverages such as coffee, tea, and cola drinks have diuretic effects on the body. Why do caffeinated beverages increase the volume of urine? Select one: a. Caffeine increases ADH, which increases the reabsorption of water in the kidneys. b. Caffeine inhibits ADH, which reduces the reabsorption of water in the kidneys. c. Caffeine increases ADH, which reduces the reabsorption of water in the kidneys. d. Caffeine inhibits ADH, which increases the reabsorption of water in the kidneys.arrow_forwardThe function unique to the nephron loop is to a. regulate pH. b. excrete water. c. establish a concentration gradient in the medulla interstitial fluid. d. regulate the concentration of blood Ca2+.arrow_forward
- Discuss the evolution of the various excretory mechanisms in animals. Ex. from contractile vacuoles to vertebrate kidney. own words pleasearrow_forwardWater 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.arrow_forwardAn important function of the excretory system is to eliminate excess nitrogen produced by metabolic processes. Which of the following organisms excretes nitrogenous wastes as a precipitate, thus using very little water?a. frogb. rabbitc. pigeond. camelarrow_forward
- Many types of fishes live in freshwater. Generally, water moves by osmosis from the surrounding fresh water into the fish's body. This observation helps to explain which feature of the excretory systems of freshwater fishes? a. They tend to produce dilute, watery urine. b. They tend to produce concentrated, dark urine. c. They do not produce urine, but instead conserve or re-use nitrogenous wastes. d. They may produce either dilute or concentrated urine, depending on the activity of the fish.arrow_forwardMarine reptiles eliminate excess salt bya. transport across their gills.b. excretion through salt glands.c. reabsorption in the nephron tubules.d. excretion through the cloaca.arrow_forwardWhich transport action in the proximal tubule would take place if the body needed to increase the blood pH? A. secrete HCO3– B. secrete H+ C. reabsorb Na+ D. reabsorb K+ E. None of the above answer choices correctly answers the question.arrow_forward
- Which of the following is a function of the kidneys? a. The kidneys remove harmful substances from the body. b. The kidneys recapture water for use by the body. c. The kidneys regulate the levels of salt in the blood. d. All of the choices are correct.arrow_forwardTo 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.arrow_forwardGlomerular 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_forward
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