BIOLOGY 12TH ED (LL) W/ CONNECT
12th Edition
ISBN: 9781264898091
Author: Raven
Publisher: 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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The 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+.
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.
Compare the values below. Which is greater, or are the two
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A. ECF concentration surrounding the proximal tubule of a
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B. ECF concentration surrounding the bottom of the loop of
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Chapter 49 Solutions
BIOLOGY 12TH ED (LL) W/ CONNECT
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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- 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_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_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_forward
- Please define/describe the following 3 renal functions in mammals: filtration, reabsorption and secretion. Describe at least one location in the nephron where each of these functions takes place. How does each of these functions contribute to homeostasis of the organism?arrow_forwardThe forces that oppose glomerular filtration are: W. osmotic force of proteins in the glomerular capillariesX. blood pressure in the glomerular capillariesY. fluid pressure in Bowman’s capsuleZ. ATP-dependent processes in the nephron Select one: a. if only W, X and Y are correct b. if only W and Y are correct c. if only X and Z are correct d. if only Z is correct e. if all are correctarrow_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
- Which one of the following is extremely important for water conservation in mammals? juxtamedullary nephrons podocytes Bowman's capsule urethra ureterarrow_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_forwardA scientist interested in studying aquaporins plans to examine the different parts of mammalian nephrons in which large numbers of aquaporins can be found. This researcher would NOT choose to examine the…arrow_forward
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