3. Administration of a drug that inhibits Na+ reabsorption by the thick ascending limb of the loop of Henle results in which of the following?OA) Decreased ability to excrete maximally concentrated urineOB) Decreased K+ excretionC) Decreased Na+ reabsorption by the collecting ductOD) Increased fluid reabsorption by the proximal tubule.OE) Increased urea reabsorption by the collecting duct

Within the nephrons, the ascending of the loop of henle is divided into thick and thin portions. The…

3. Administration of a drug that inhibits Na+ reabsorption by the thick ascending limb of the loop of Henle results in which of the following? A) Decreased ability to excrete maximally concentrated urine B) Decreased K+ excretion C) Decreased Na+ reabsorption by the collecting duct D) Increased fluid reabsorption by the proximal tubule. E) Increased urea reabsorption by the collecting duct

3. Administration of a drug that inhibits Na+ reabsorption by the thick ascending limb of the loop of Henle results in which of the following? A) Decreased ability to excrete maximally concentrated urine B) Decreased K+ excretion C) Decreased Na+ reabsorption by the collecting duct D) Increased fluid reabsorption by the proximal tubule. E) Increased urea reabsorption by the collecting duct

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter48: Regulating The Internal Environment

Section: Chapter Questions

Problem 7TYK: Which of the following is an example of autoregulation of kidney function? a. The RAAS regulates Na1...

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44. Fluid reabsorption by the proximal renal tubule can be increased by which of the following mechanisms in capillaries? OA) Decreasing the hydrostatic pressure in the glomerular capillaries B) Decreasing the oncotic pressure in the peritubular capillaries OC) Increasing the hydrostatic pressure in the peritubular capillaries OD) Increasing the oncotic pressure in the peritubular capillaries
33. The rate of HCO3-reabsorption in the renal tubules is increased by which of the following? OA) A decrease in the filtered load of HCO3 O B) An increase in arterial Pco₂ C) An increase in extracellular fluid volume OD) An increase in serum Cl-concentration O) E Inhibition of renal carbonic anhydrase activity
Low sodium at the macula densa will cause what effect? a) the macula densa cells to release aldosterone b) constriction of the afferent arteriole to increase glomerular filtration rate c) the juxtaglomerular cells to release renin into the blood stream d) ACE to convert Angiotensin I to Angiotensin II and cause vasodilation
3) Which of the following best describes the action of a loop diuretic? A) Inhibits potassium reabsorption in the distal tubule B) Inhibits sodium reabsorption in the proximal tubule C) Inhibits sodium reabsorption in the loop of Henle D) Inhibits water secretion in the loop of Henle
Decreased renal blood flow Sympathetic input Angiotensinogen Increased effective blood volume to correct initial stimulus to the system Increased sodium and water reabsorption by nephron collecting duct Renin released by juxtaglomerular cells of nephron cleaves angiotensinogen A) decreased renal blood flow B) increased renal blood flow C) sympathetic input D) angiotensin II negative feedback Stimulating variables: Nitric oxide from macula densa E) increased blood volume CAMP Diuretics Epinephrine Norepinephrine Early part of day Erect posture Hyponatremia Hyperkalem Fig. 17-17. The Feedback Mechanisms Regulating Aldosterone Secretion CAMP Cyclic adenosine monophosphate; ACTH, adrenocorticotropic hormone Copyright ©2008 by Mosby, Inc., an affliate of Elsevier Inc. (-) Angiotensin I TAldosterone levels Inhibiting variables: Adenosine from macula densa Angiotensin II Adrenergic blocking agents Aldosterone Angiotensin I-converting enzyme in lung Recumbent posture Later part of day P ACTH…
) The tubuloglomerular feedback mechanism responds to an increase in a.) A) urine production by signaling for a decrease in urine production through the hormone ADH. b.) glomerular capillary hydrostatic pressure by signaling for afferent arterioles to constrict and increase filtration rate. c.) Nacl concentration in tubular fluid by signaling for afferent arteriole constriction with local chemical messengers. d.) systemic blood pressure by signaling for a decrease in heart rate through blood-borne hormones.
The tubuloglomerular feedback mechanism responds to an increase in A) urine production by signaling for a decrease in urine production through the hormone ADH. B) glomerular capillary hydrostatic pressure by signaling for afferent arterioles to constrict and increase filtration rate. C) NaCl concentration in tubular fluid by signaling for afferent arteriole constriction with 4ocal chemical messengers. D) systemic blood pressure by signaling for a decrease in heart rate through blood-borne hormones.
Which of the following statements is false regarding the filtration that takes place in the kidneys? a) About 20% of the total plasma volume is filtered into the lumen of Bowman's capsule. b) Glomerular filtration rate (GFR): indicates how fast blood plasma is filtered through the glomeruli of the kidney c) It is primarily the systemic blood pressure that determines how much urine you produce. d) The filtrate consists of water, smaller molecules and ions that can cross the filter barrier
2. Which of the following collecting duct transporters is required to concentrate urine?A) Aquaporin channelsB) H+ ATPaseC) K+ channelsD) Na+ channelsE) Na+ - K+ - 2CI - symporter
32. Renin-secreting cells in the kidney are located in which of the following structures? OA) Afferent arteriole B) Arched collecting tubules OC) Glomerular mesangium OD) Loop of Henle OE) Macula densa of the distal tubule
40. Which of the following lettered curves in the graph shown best illustrates the renal handling of inulin? O A) 150- 15 100- 50- B A Filtered load remaining in tubular lumen (%) 200- 0+ OB) Proximal Loop of tubule Henle O C) Distal tubule HL Urine OD) O E)
An increase on blood pressure in the afferent arteriole of the kidney will result in All of the fallowing Except: A) an increase in GFR B) an increase in pressure in glomerular capillaries C) an increase in Renin Secretion D) somewhat greater output of urine