Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Textbook Question
Chapter 20.2, Problem 1CC
Does the apical membrane of a collecting duct cell have more water pores when vasopressin is present or when it is absent?
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When you are have sufficient water volume in your blood, you stop secreting ADH. What is the effect of the absence ADH have upon on the collecting ducts?
Why is this process considered secondary active transport? Does water reabsorption accompany ion reabsorption in this region of the nephron?
Explain how the collecting duct uses the concentration gradient set up by the loop of Henle.
Chapter 20 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 20.2 - Does the apical membrane of a collecting duct cell...Ch. 20.2 - Prob. 2CCCh. 20.2 - A scientist monitoring the activity of...Ch. 20.2 - If vasopressin increases water reabsorption by the...Ch. 20.2 - Experiments suggest that there are peripheral...Ch. 20.2 - Prob. 6CCCh. 20.2 - Prob. 7CCCh. 20.3 - In Figure 20.9b, what forces cause Na+ and K+ to...Ch. 20.3 - Prob. 9CCCh. 20.3 - Laboratory values for ions may be reported as...
Ch. 20.3 - A man comes to the doctor with high blood...Ch. 20.3 - Map the pathways through which elevated renin...Ch. 20.3 - Why is it more efficient to put ACE in the...Ch. 20.5 - Incorporate the thirst reflex into Figure 20.8.Ch. 20.6 - Map the pathway that begins with renal artery...Ch. 20.7 - CO2+H2OH++HCO3(6) In equation 6, the amount of...Ch. 20.7 - Why is ATP required for H+ secretion by the H+-K+...Ch. 20.7 - In hypokalemia, the intercalated cells of the...Ch. 20 - What is an electrolyte? Name five electrolytes...Ch. 20 - Prob. 2RQCh. 20 - Prob. 3RQCh. 20 - List the receptors that regulate osmolarity, blood...Ch. 20 - How do the two limbs of the loop of Henle differ...Ch. 20 - Prob. 6RQCh. 20 - Prob. 7RQCh. 20 - Prob. 8RQCh. 20 - Write out the words for the following...Ch. 20 - Prob. 10RQCh. 20 - Prob. 11RQCh. 20 - Prob. 12RQCh. 20 - Prob. 13RQCh. 20 - Prob. 14RQCh. 20 - Prob. 15RQCh. 20 - When ventilation increases, what happens to...Ch. 20 - Prob. 17RQCh. 20 - Figures 20.15 and 20.18a show the respiratory and...Ch. 20 - Explain how the loop of Henle and vasa recta work...Ch. 20 - Prob. 20RQCh. 20 - Prob. 21RQCh. 20 - Name the four main compensatory mechanisms for...Ch. 20 - Prob. 23RQCh. 20 - Compare and contrast the terms in each set: a....Ch. 20 - Prob. 25RQCh. 20 - Prob. 26RQCh. 20 - Prob. 27RQCh. 20 - Hannah, a 31-year-old woman, decided to have...Ch. 20 - Prob. 29RQCh. 20 - Prob. 30RQCh. 20 - The Henderson-Hasselbalch equation is a...Ch. 20 - Hyperglycemia in a diabetic patient leads to...Ch. 20 - Osmotic diuresis refers to the loss of additional...
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- why micturition is more in winters than in summer season?arrow_forwardExplain why fluid in the descending limb of the nephronloop is hypertonic.arrow_forwardWhy is this statement false? Without the renal medullar osmotic gradient, you would not be able to raise the concentration of urine above 1200 mOsmarrow_forward
- What function could the collecting duct not perform if there were no nephron loops? Why?arrow_forwardThe type of tissue involved in many types of transport processes, and which often lines the inner surfaces of tubular structures, is called _______________arrow_forwardWhat hormones can affect the water permeability of the DCT and collecting duct? Without these hormones, is the DCT and collecting duct permeable to water?arrow_forward
- In the proximal tubule of the nephron, what is the major hydrogen ion secreting mechanism?arrow_forwardCan you explain what happens to Na+ concentration in the nephron when GFR increases?arrow_forwardWhat three stimuli control vasopressin secretion? What is the most potent stimulus for vasopressin release?arrow_forward
- Explain what are countercurrent exchangers? Explain how are they used in the conservation of temperature. How is it used to extract oxygen in gills? How is it used to eliminate waste in the Malpighian tubules? How is a counter current multiplier used to concentrate urine in the kidney?arrow_forwardThe basement membrane of the glomerulus is composed of glycoproteins and ___ and it restricts the passage of ____.a). proteoglycans; plasma proteins b). phospholipids; plasma ions c) .phospholipids; plasma proteins d) .proteoglycans; plasma ionsarrow_forwardWhat types of osmoregulatory challenges do humans experience? Explain. What mechanisms do we have to meet these challenges?arrow_forward
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