Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 49, Problem 4TY
Summary Introduction
Introduction: Homeostasis of the body is maintained by several processes. Excretion helps in maintaining homeostasis by regulating the osmotic levels and removal of excess solutes, ions and other molecules.
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The active transport of solutes into the lumen of an excretory organ iscalleda. filtration.b. reabsorption.c. secretion.d. excretion.
Excretory systems produce a final excreted product through
A.
vesicular packaging of nitrogenous wastes.
B.
proteolytic cleavage of amino acids.
C.
filtration of lymphatic fluids.
D.
de novo synthesis in the nephron of urea or uric acid.
E.
some combination of filtration, secretion and reabsorption.
Which is the correct answer for kidney from the following statement(s)?
Local production of prostaglandin in kidney protects kidney from ischemic injury.
a.
Sympathetic stimulation has no effect on afferent and efferent arterioles so that kidney is protected from undergoing ischemia.
b.
Kidney is vulnerable to ischemic injury.
C.
d.
NSAID inhibits production of angiotensin I.
Only (a) and (c) are CORRECT
e.
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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- Which of the following does not contribute to the process of filtration? (a) active transport by epithelial cells lining renal tubules (b) large surface area for filtration (c) low permeability of glomerular capillaries (d) high hydrostatic blood pressure in glomerular capillaries (e) podocytesarrow_forwardWhich 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_forwardThe major action of ADH in the kidneys is to:a. increase water absorption by the proximal convoluted tubule.b. increase glomerular filtration rate.c. increase water reabsorption by the collecting duct.d. increase potassium’s excretion.arrow_forward
- The return of filtered molecules from the nephron packet to the blood is called a. Excretion b. Reabsorption c. Filtration d. Secretionarrow_forwardFunction(s) of the excretory system include ... A. removal of wastes and harmful substances. B. maintenance of water balance. C. selective retention of some solutes. D. Both of answerc hoiuces A and B (but not C) correctly complete the sentence. E. All of the answer choices A and B and C correctly complete the sentence.arrow_forwardWhich 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_forward
- Which of the following is, are function of the kidneys? a. Control plasma volume b. Control blood pressure c. Control red blood cell production d. All of thesearrow_forwardIf blood pressure in the glomerulus increases, then a. net filtration pressure decreases. b. the percentage of substances reabsorbed increases. c. urine production increases. d. renin is released.arrow_forwardWhich of following is not a function of kidneys? a. Maintain volume, pH and composition of body luids b. Remove excess toxic chemicals c. Remove metabolic wastes d. Synthesis of angiotensinogenarrow_forward
- Which of the following function isperformed by the kidneys in the humanbody?A. Excretion B. Respiration C. Digestion D. Transportationarrow_forwardSubstances moving from the blood in the capillaries through tubule cells into the filtrate is called a. Tubular reabsorption b. Tubular secretion c. Tubular filtration d. Fenestrationarrow_forwardWhich of the following are the functional units of the kidneys? A. Collecting ducts B. Major calyces C. Peritubular capillariesD. Nephronsarrow_forward
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