BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 49, Problem 6A
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 have
a. shorter loops of Henle than the tropical species.
b. longer loops of Henle than the tropical species.
c. shorter proximal convoluted tubule than the tropical species.
d. longer distal convoluted tubules than the tropical species.
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Chapter 49 Solutions
BIOLOGY
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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- 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.arrow_forwardIn reptiles, distal collecting tubules merge to form collecting ducts, which ultimately form the ____. a. ureter b. urodeum c. cloaca d. renal veinarrow_forwardA shark’s blood is isotonic to the surrounding seawater because of the reabsorption of ____ in its blood. a. ammonia b. uric acid c. urea d. NaClarrow_forward
- Compare the values below. Which is greater, or are the two values equal? A. ECF concentration surrounding the proximal tubule of a mammal nephron B. ECF concentration surrounding the bottom of the loop of Henle of a mammal nephron O A is greater than B B is greater than A the values are equalarrow_forwardWhich type of animals consume little or no energy in maintaining water balance?A. Birds B. Mammals C. Marine vertebrates D. Marine invertebrates The following are involved in the regulation of mammalian kidney function except:A. ADH B. Aldosterone C. Renin D. Oxygenarrow_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_forward
- Which 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_forwardThe osmotic concentration of seawater is approximately 1,000 mOsmol L-¹. Which of the following marine vertebrates can drink seawater without becoming dehydrated? A. A bony fish such as the flounder (maximum urine osmolarity = 340 mOsmol L-¹) B. A marine bird such as an albatross (maximum urine osmolarity ≈ 640 mOsmol L-¹) C. A marine reptile such as a loggerhead turtle (maximum urine osmolarity ≈ 320 mOsmol L-¹) D. A marine mammal such as a whale (maximum urine osmolarity ≈ 1,920 mOsmol L-¹) E. All of the abovearrow_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
- 3. Name the two types of nephrons found in a human kidney and you see on the kidney plaque. Describe their role in water regulation. a. b. 4. Name the two sets of capillaries that are part of the portal system found in the kidneys? What is their specific role in urine formation? a. b.arrow_forwardWhich 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_forward21. formed from both endoderm and ectoderm: a. pharathryoid glands b. pharyngeal groove c. pharyngeal pouch d. thymus e. tympanic membrane 22. nephron development begins with migration of cells from around uretric bud tip to region of the uretric stalk. these cells differentiate to form the a. renal cortex b. renal vesicle c. renal pyramid d. penal papilla e. renal pelvisarrow_forward
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