Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 1.6, Problem 5CC
Students in the laboratory run an experiment in which they drink different volumes of water and measure their urine output in the hour following drinking. What are the independent and dependent variables in this experiment?
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A 65-kg man is participating in a research study for
which it is necessary to know the volumes of his body
fluid compartments. To measure these volumes, the
man is injected with 100 mci (millicurie) of H0 and
500 mg of mannitol. During a 2-hour equilibration
period, he excretes 10% of the H,0 and 10% of the
mannitol in his urine. Following equilibration, the
concentration of H,0 in plasma is 0.213 mCi/100 ml
and the concentration of mannitol is 3.2 mg/100 mL.
• What is his total body water, his ECF volume, and his
ICF volume? is the man's total body water appropriate
for his weight?
A 65-kg man is participating in a research study for
which it is necessary to know the volumes of his body
fluid compartments. To measure these volumes, the
man is injected with 100 mCi (millicurie) of H20 and
500 mg of mannitol. During a 2-hour equilibration
period, he excretes 10% of the H,0 and 10% of the
mannitol in his urine. Following equilibration, the
concentration of H,0 in plasma is 0.213 mCi/100 mL
and the concentration of mannitol is 3.2 mg/100 mL.
What is his total body water, his ECF volume, and his
ICF volume? Is the man's total body water appropriate
for his weight?
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?
Chapter 1 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 1.4 - If a person eats 12 milligrams (mg) of salt in a...Ch. 1.4 - Glucose is metabolized to CO2 and water. Explain...Ch. 1.5 - What is the drawback of having only a single...Ch. 1.5 - Prob. 4CCCh. 1.6 - Students in the laboratory run an experiment in...Ch. 1 - Define physiology. Describe the relationship...Ch. 1 - Name the different levels of organization in the...Ch. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Define homeostasis. Name some regulated variables...
Ch. 1 - Name four major themes in physiology.Ch. 1 - Put the following parts of a reflex in the correct...Ch. 1 - The name for daily fluctuations of body functions...Ch. 1 - Mapping exercise: Make a large map showing the...Ch. 1 - Distinguish between the items in each group of...Ch. 1 - Name as many organs or body structures that...Ch. 1 - Prob. 12RQCh. 1 - Explain the differences among positive feedback,...Ch. 1 - A group of biology majors went to a mall and asked...Ch. 1 - Although dehydration is one of the most serious...Ch. 1 - Prob. 16RQCh. 1 - You performed an experiment in which you measured...Ch. 1 - Prob. 18RQCh. 1 - Prob. 19RQ
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- The steroid nandrolone, which is found naturally in horses, is administered to racing horses to aid in recovery. Because it is an anabolic steroid, nandrolone levels in excess of normal background levels disqualify a horse from racing. For example, to race in the Kentucky Derby, a gelding (a castrated male horse) may have no more than 1 ng/mL in the urine, whereas an unaltered male horse may have no more than 45 ng/mL of the metabolite estrane-3,17-diol in the urine. Knowing that nandrolone is an anabolic steroid, which hormone would you expect it to closely resemble? (testosterone cortisol O progesterone O epinephrine antidiuretic hormone During metabolism, carbon 3 and carbon 4 of nandrolone are reduced, forming the metabolite estrane-3,17-diol. Modify nandrolone to give estrane-3,17-diol. Select Draw Rings More Erase S с O 0 H ✪ ا قد 2 oarrow_forwardA patient comes to your medical practice with complaints of low urine output (not peeing). You use inulin to calculate the glomerular filtration rate (GFR) using the following information: Plasma level (P – constant over 24 hours): 10 mg/mL inulin. Urine sample (U): 144 mg inulin/mL urine. Urine formation (V): 10 mL/min. Using the fromula GFR=V ✕ U/P, you calculate a GFR of ... A) 144mL/min.. B) 14400 mL/min. C) 144 min./mL. D) 144 g mannitol/min.arrow_forwardUse the following information to answer the next question. Glucose in Urine Urine Output Patient (mmolL) (mL/day) A 0.0 1 550 B 0.3 4 300 1.0 6 000 0.0 8 100 Which patient row represents the urine glucose level of a normal patient and the urine volume of a patient with untreated diabetes insipidus, respectively? Select one: O a. Row A Ob. Row C c. Row D Od. Row Barrow_forward
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