CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
3rd Edition
ISBN: 9780135191811
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 32.5, Problem 3CC
WHAT IF? If blood pressure in the afferent arteriole leading to a glomerulus decreased, how would the rate of blood filtration within Bowman's capsule be affected? Explain.
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Chapter 32 Solutions
CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
Ch. 32.1 - What properties do all types of epithelia share?Ch. 32.1 - Prob. 2CCCh. 32.2 - Prob. 1CCCh. 32.2 - Prob. 2CCCh. 32.2 - Prob. 3CCCh. 32.3 - Is it accurate to define homeostasis as a constant...Ch. 32.3 - Prob. 2CCCh. 32.3 - Prob. 3CCCh. 32.4 - What is the function of the filtration step in...Ch. 32.4 - What advantage does uric acid offer as a...
Ch. 32.4 - WHAT IF? A camel standing in the sun requires much...Ch. 32.5 - Prob. 1CCCh. 32.5 - Prob. 2CCCh. 32.5 - WHAT IF? If blood pressure in the afferent...Ch. 32 - The body tissue that consists largely of material...Ch. 32 - Prob. 2TYUCh. 32 - Which process in the nephron is least selective?...Ch. 32 - Homeostasis typically relies on negative feedback...Ch. 32 - Prob. 5TYUCh. 32 - In which of the following species should natural...Ch. 32 - Prob. 7TYUCh. 32 - Prob. 8TYUCh. 32 - Prob. 9TYUCh. 32 - Prob. 10TYUCh. 32 - Prob. 11TYUCh. 32 - SYNTHESIZE YOUR KNOWLEDGE These macaques (Macaca...
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- ASAP HELParrow_forward4. Given the net glomerular filtration pressure of 55 mm Hg, a plasma protein osmotic force (TTGC) = 12 mm Hg, and a fluid pressure in Bowman's space (PBS) = 10 mm Hg, what would be glomerular capillary blood pressure (PGC)? Would filtration be favored under these conditions? How do you know?arrow_forward4) Measurements in a nephron reveal a glomerular hydrostatic pressure of 69 mm Hg, and a fluid pressure in the Bowman's capsule of 16 mm Hg. Assuming that the plasma colloid osmotic pressure is 33 mm Hg, and that essentially no plasma proteins are filtered by the glomerulus, what is the net glomerular filtration pressure in this case?arrow_forward
- How is the filtration that occurs in the glomerulus different from passive transport, active transport, or any form of membrane transport? 1. Filtration occurs between cells, not through them 2. Filtration only involves small substances, whereas membrane transport often deals with large substances 3. Filtration involves the movement of water, whereas passive transport doesn’t involve water movementarrow_forward3. In order to maintain homeostasis (body water volume, plasma Na*) it is important to regulate Na* and water balance. First, identify the regions of the nephron that are permeable to Na* and H20. Second, tie together the epithelial transport mechanisms for Na* and H20 reabsorption and an idea of the magnitude of reabsorption from each nephron region. Hint: refer to the figure at the end of the Renal Processes lecture to help with context. 4. Review how urine is concentrated throughout the nephron (and the role of Na*, urea).arrow_forwardOne model of the glomerular membrane is a microporous membrane in which right cylindrical pores penetrate all the way through the membrane. Assume that the pores have a length of 50 nm and a radius of 3.5 nm. The viscosity of plasma is 0.002 Pa s. The average hydrostatic pressure in the glomerulus is 60 mm Hg, hydrostatic pressure in Bowman's space is 20 mm Hg and the average oncotic pressure of glomerular capillary blood is 28 mm Hg. A. Calculate the flow through a single pore assuming laminar flow (use the Poiseuille flow equation) B. How many pores would there have to be to produce a normal GFR? C. If the total aggregate area of the kidneys for filtration is 1.5 m2, what is the density of the pores (number of pores per unit area)? D. What fraction of the area is present as pores?arrow_forward
- What is the difference between filtration and reabsorption? Explain how hydrostatic, osmotic (or colloid oncotic), and osmosis influence fluid transport across the nephron.arrow_forward25arrow_forwardDiscuss Concepts As a person ages, nephron tubules lose some of their ability to concentrate urine. What is the effect of this change?arrow_forward
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