Mastering A&P with Pearson eText - Standalone Access Card - for Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134714813
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 20, Problem 33RQ
Osmotic diuresis refers to the loss of additional water in urine as a result of unreabsorbed solutes. To see what difference unreabsorbed solutes make, calculate the volumes of filtrate that would be needed for excretion of 150 milliosmoles of NaCl. Then repeat the calculation for a diabetic who is excreting the same 150 mosmol NaCl plus 200 mosmol unreabsorbed glucose.
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Which of the following is TRUE about glucose reabsorption in the kidney?
a.If an individual does not have diabetes mellitus, 100% of filtered glucose is reabsorbed at the proximal convoluted tubule.
b.If an individual has diabetes mellitus, filtered glucose will be present in all the renal tubule.
c.Glucose reabsorption along the proximal convoluted tubule uses the sodium glucose secondary active transporter and it is independent of insulin.
d.All of the above
e.None of the above
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Diabetes insipidus (DI) is a condition where the action of antidiuretic hormone (vasopressin) is inhibited. If normal urine concentration is 300 mOsm/L, what would you expect the urine concentration to be of a patient with DI?
You need to evaluate kidney function in a 55-year-old obese man with type 2 diabetes; you ask him to collect his urine over a 24-hour period. He collects 4,320 mL of urine. The clinical laboratory returns the following results from analysis of his urine and plasma samples:
Plasma creatinine = 3.0 mg/100 mL
Urine creatinine = 40 mg/100 mL
Plasma potassium = 5.0 mmol/L
Urine potassium = 20 mmol/L
What is the net renal tubular secretion rate of potassium in the patient described in question?
Group of answer choices
.280 mmol/min
.140 mmol/min
.060 mmol/min
.030 mmol/min
Chapter 20 Solutions
Mastering A&P with Pearson eText - Standalone Access Card - for 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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