Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 33.5, Problem 2MC
Summary Introduction
To determine:
The movement of water in descending loop of nephron and compare with solute concentration.
Concept introduction:
Nephron is the small structural and functional unit of the kidney. It is made up of a renal corpuscle and a renal tubule. Nephron is the actual structure which produces urine in the process of removing waste and excess substances from the blood.
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Make a sketch of ONE complete Nephron in the kidney and label to show the blood flow (mark with red) and urine flow in this nephron (you can also use arrow to indicate flow direction).
Remember only ONE nephron in your kidney. show the correct location of this nephron (Cortical vs. Juxtamedullary Nephrons) in the entire kidney.
show the correct blood tubings within the nephron (I should be able to tell afferent and efferent arteriole from your sketch; also your nephron is closely associated with two capillary bed )
The diagram below illustrates a nephron, with an enlargement of the glomerulus shown to the right. Use the labelled structures to
answer the questions which follow. Note that structures which appear both in the diagram on the left and on the 'detail' diagram
are labelled with the same letter in both places.
E
AQ
D
H
B
N
GOOOOD
1. Changes in glomerular filtration rate (GFR) as evidenced by changes in the volume and content of filtrate in the nephron are
detected by which cells? Select a letter [Select]
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.
Chapter 33 Solutions
Biology: Concepts and Investigations
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 - Prob. 2MCCh. 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 - Prob. 1WIOCh. 33 - Prob. 2WIOCh. 33 - Prob. 3WIOCh. 33 - Prob. 4WIOCh. 33 - Prob. 5WIOCh. 33 - Prob. 6WIOCh. 33 - How does the kidney reduce the volume of urine to...Ch. 33 - Prob. 8WIOCh. 33 - Prob. 1PITCh. 33 - Prob. 2PITCh. 33 - Prob. 3PIT
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- Describe (and label on a diagram) the structures of a nephron (including associated blood vessels) and give the functions of each structure.arrow_forwardFigure 41.6 Which of the following statements about the nephron is false? The collecting duct empties into the distal convoluted tubule. The Bowman’s capsule surrounds the glomerulus. The loop of Henle is between the proximal and distal convoluted tubules. The loop of Henle empties into the distal convoluted tubule.arrow_forwardFigure 41.5 Which of the following statements about the kidney is false? The renal pelvis drains into the ureter. The renal pyramids are in the medulla. The cortex covers the capsule. Nephrons are in the renal cortex.arrow_forward
- As a person ages, nephron tubules lose some of their ability to concentrate urine. What is the effect of this change?arrow_forwardReabsorption depends on _________. a. osmosis across the nephron wall b. active transport of sodium across the nephron wall c. a steep solute concentration gradient d. all of the abovearrow_forwardStill considering the diagram, angiotensin II (Angll) may increase GFR by acting on which arteriole? Select a letter [ Select] Question 5 When MAP falls, the sympathetic nervous system is activated. Noradrenaline affects which arteriole during a sympathetic response? Select a letter [Select ]arrow_forward
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