Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Textbook Question
Chapter 48, Problem 7TYK
Which of the following is an example of autoregulation of kidney function?
a. The RAAS regulates Na1 by secreting renin when blood pressure or blood volume decreases.
b. The ADH system regulates water balance by decreasing water reabsorption and increasing excretion of salt.
c. Receptors in the juxtaglomerular apparatus detect a higher salt concentration in the distal convoluted tubule and trigger constriction of the afferent arteriole to reduce glomerular filtration rate.
d. ANF is released by the kidney to increase renin release.
e. Angiotensin II lowers blood pressure by constricting arterioles.
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How would damage to the renal capillaries resulting in an increase in protein filtration and urinary excretion affect net filtration pressure in the systemic circulation?
a. Increase capillary reabsorption due to an increase in interstitial colloid osmotic pressure
b. Increase capillary filtration due to an increase in interstitial hydrostatic pressure
c. Increase capillary filtration due to a decrease in blood colloid osmotic pressure
d. Increase capillary reabsorption due to increased blood hydrostatic pressure
Which 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…
A pt was born with a rare genetic disorder in which the proximal tubules of her nephrons express half the number of aquaporins as normal. What will result?
A. reduced reabsorption of water, although as much reabsorption of Na+ as is typical?
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Chapter 48 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 48.1 - Define the terms osmosis, osmolarity, hypoosmotic,...Ch. 48.2 - How are protonephridia, metanephridia, and...Ch. 48.3 - Prob. 1SBCh. 48.3 - Prob. 2SBCh. 48.4 - Prob. 1SBCh. 48.5 - Prob. 1SBCh. 48.5 - Reptiles and birds excrete nitrogenous wastes in...Ch. 48.6 - Distinguish between ectothermy and endothermy....Ch. 48.7 - Prob. 1SBCh. 48.7 - Prob. 2SB
Ch. 48.8 - Prob. 1SBCh. 48 - Which of the following statements about...Ch. 48 - Prob. 2TYKCh. 48 - Prob. 3TYKCh. 48 - Prob. 4TYKCh. 48 - Prob. 5TYKCh. 48 - Which of the following correctly describes a part...Ch. 48 - Which of the following is an example of...Ch. 48 - Prob. 8TYKCh. 48 - Prob. 9TYKCh. 48 - Prob. 10TYKCh. 48 - Prob. 11TYKCh. 48 - Discuss Concepts As a person ages, nephron tubules...Ch. 48 - Prob. 13TYKCh. 48 - Prob. 14TYKCh. 48 - Prob. 15TYKCh. 48 - Prob. 16TYKCh. 48 - Prob. 1ITDCh. 48 - Prob. 2ITDCh. 48 - Prob. 3ITD
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- The afferent arteriole delivers blood to the (a) renal artery (b) efferent arteriole (c) renal vein (d) capillaries of the glomerulus (e) peritubular capillariesarrow_forwardWhich of the following does not contribute to the high salt concentration in the interstitial fluid of the kidney medulla? (a) active transport of sodium from the upper part of the ascending limb (b) diffusion of salt from the ascendinglimb of the loop of Henle (c) reabsorption of salt from various regions of Bowman’s capsule (d) counterflow of fluid through the two limbs of the loop of Henle (e) diffusion of urea out of the collecting ductarrow_forwardGlomerular filtration can be increased by which of the following? A. Increasing blood flow via afferent arteriole B. Decreasing blood flow via afferent arteriole C. Decreasing arterial blood pressure D. Increasing blood flow via efferent arteriole The answer is (A) Increasing blood flow via afferent arteriole. Please explain why it is not the other options (B,C,D)arrow_forward
- Which of the following would increase the rate of glomerular filtration? A)increasing the concentration of protein in the blood. B) decreasing the volume of blood plasma. C) increasing the arterial pressure of the blood . D) decreasing the osmotic pressure of the blood .arrow_forwardAs the filtrate moves down the collecting duct of the nephron ______. A no urea is reabsorbed because urea is a waste product that the body needs to get rid of B urea is actively transported into the filtrate to prevent it from accumulating in the renal medulla C some urea is reabsorbed from the filtrate in order to increase the osmolarity of the renal medullaarrow_forwardWhat is an example of a diagram that explains the core concept of flow down gradients in the urinary system/kidneys?arrow_forward
- Which of the following statements about the kidney is false? a. The renal pelvis drains into the ureter. b. The renal pyramids are in the medulla. c. The cortex covers the capsule. d. Nephrons are in the renal cortex.arrow_forwardI. It is the microscopic structural and filtering unit of the kidney. A. Renal Cortex B. Loop of Henle C. Nephrons D. Renal Corpuscle Ii. It refers to the process of elimination of metabolic waste products from an animal's body. A. Filtration B. Excretion C. Osmoregulation D. Reabsorption Iii. It is also known as the papillary duct, which receives fluid from the nephrons. A. Collecting Duct B. Renal Pyramid C. Distal Convoluted Tubule (DCT) D. Proximal Convoluted Tubule (PCT) Iv. The nephrons are located deep within which part of the kidney? A. Ureter B. Cortex of the Kidney C. Adrenal Gland D. Renal Pelvisarrow_forwardWhen arterial blood pressure drops below normal, which renal function occur as a result of sympathetic nervous system activation? a. Afferent arteriole vasodilation b. Decreased ADH secretion c. Decreased renin secretion d. Afferent arteriole vasoconstrictionarrow_forward
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