BIOLOGY 101 TIDEWATER CC -W/ACCESS >IC
3rd Edition
ISBN: 9781259332319
Author: Hoefnagels
Publisher: MCG CUSTOM
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Chapter 33, Problem 5MCQ
Summary Introduction
Introduction:
The process of filtration, reabsorption, and secretion are the parts of urine formation, which occurs in kidneys. The useful materials are retained by the body and the toxic substances are excreted out of the body in the form of urine, which is known as excretion.
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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?
b. reduced reabsorption of water, Na+ and glucose in the proximal tubules?
c. Reduced reabsorption of both water and Na+ in equal proportions?
D. Reduced reabsorption of all materials in the proximal tubules.
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
What causes the large osmotic force due to proteins in the peritubular capillary?
A. The secretion of proteins into the interstitial space by the tubule cells.
B. The prevention of proteins being filtered at the glomerulus.
C. The high capsular pressure in the glomerulus.
D. A and B
Chapter 33 Solutions
BIOLOGY 101 TIDEWATER CC -W/ACCESS >IC
Ch. 33.1 - Prob. 1MCCh. 33.1 - Prob. 2MCCh. 33.1 - Prob. 3MCCh. 33.2 - What is osmoregulation, and why is it important?Ch. 33.2 - Prob. 2MCCh. 33.2 - Prob. 3MCCh. 33.3 - Prob. 1MCCh. 33.3 - 2. Describe the function of Malpighian tubules in...Ch. 33.4 - Prob. 1MCCh. 33.4 - Prob. 2MC
Ch. 33.5 - What three processes occur in urine formation?Ch. 33.5 - Prob. 2MCCh. 33.5 - Describe the roles of antidiuretic hormone and...Ch. 33.6 - Prob. 1MCCh. 33.6 - Prob. 2MCCh. 33 - Prob. 1MCQCh. 33 - Prob. 2MCQCh. 33 - Prob. 3MCQCh. 33 - Prob. 4MCQCh. 33 - Prob. 5MCQCh. 33 - Which of the following components of glomerular...Ch. 33 - Prob. 7MCQCh. 33 - 1. What are the advantages and disadvantages of...Ch. 33 - Prob. 2WIOCh. 33 - Prob. 3WIOCh. 33 - Prob. 4WIOCh. 33 - Prob. 5WIOCh. 33 - Prob. 6WIOCh. 33 - Prob. 7WIOCh. 33 - Prob. 8WIOCh. 33 - Shortly after you drink a large glass of water,...Ch. 33 - Prob. 10WIOCh. 33 - How does the kidney reduce the volume of urine to...Ch. 33 - Prob. 12WIOCh. 33 - Prob. 14WIOCh. 33 - Prob. 13WIOCh. 33 - Prob. 15WIOCh. 33 - Prob. 1PITCh. 33 - Prob. 2PITCh. 33 - Prob. 3PIT
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- Blood pressure forces water and small solutes out of blood and into nephrons during ________. a. glomerular filtration c. tubular secretion b. tubular reabsorption d. both a and carrow_forwardAs a person ages, nephron tubules lose some of their ability to concentrate urine. What is the effect of this change?arrow_forwardWhich 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_forward
- In which part of the nephron parts is no water reabsorbed? a) The downward part of Henles is slung b) The upward part of Henles is slung c) Distal tubules d) Distal tubulesarrow_forwardSeveral pharmacological agents have been shown to lower the pressure of the filtrate inside the lumen of nephrons. What affect will this have? a hydrostatic pressure of fluid in the Bowman’s capsule increases, GFR increases b hydrostatic pressure of fluid in the Bowman’s capsule decreases, GFR decreases c hydrostatic pressure of fluid in the Bowman’s capsule increases, GFR decreases d hydrostatic pressure of fluid in the Bowman’s capsule decreases, GFR increasesarrow_forwardThe return of filtered molecules from the nephron packet to the blood is called a. Excretion b. Reabsorption c. Filtration d. Secretionarrow_forward
- Explain why the filtrate becomes hypotonic as it flows through the ascending limb of the nephron loop. Also explain why the filtrate at the bend of the nephron loop (and the interstitial fluid of the deep portions of the medulla) is hypertonic.arrow_forwardMany types of fishes live in freshwater. Generally, water moves by osmosis from the surrounding fresh water into the fish's body. This observation helps to explain which feature of the excretory systems of freshwater fishes? a. They tend to produce dilute, watery urine. b. They tend to produce concentrated, dark urine. c. They do not produce urine, but instead conserve or re-use nitrogenous wastes. d. They may produce either dilute or concentrated urine, depending on the activity of the fish.arrow_forwardDraw and describe what is happening in the nephron loop. How is the counter current exchange set up?arrow_forward
- Which area of nephron contains the organic anion and cation transporters? a. Proximal Convoluted Tubule b. Loop of Henle c. Distal Convoluted Tubule d. The collecting ductarrow_forwardIndicate the type of nephridium shown in the figure above_____________________________ Name the labeled structures A (entire brown structure) & B and indicate the step in the excretory process occurring at each. Structure Name Process step A. B.arrow_forwardNa+ ions are actively transported out of the tubules to help set up the countercurrent multiplier. Which of the following are sites of active Na+ ion transport in the nephron? Select one: a. Thin ascending limb of the loop of Henle, distal tubule b. Thick ascending limb of the loop of Henle, collecting duct c. Thin ascending limb of the loop of Henle, thick ascending limb of the loop of Henle d. Collecting duct, descending limb of the loop of Henle e. Proximal tubule, thick ascending limb of the loop of Henlearrow_forward
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