Human Physiology: An Integrated Approach (8th Edition)
Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 23, Problem 18RQ

a.

Summary Introduction

To determine: The amount of Ca2+ a person filters in a day.

Introduction: GFR (glomerular filtration rate) describes the amount of fluid that filters into Bowman’s capsule per unit time.

b.

Summary Introduction

To determine: The amount of Ca2+ a person must excrete to balance the Ca2+ level in the body.

Introduction: The total body Ca2+ is all the calcium in the body, which is distributed among three compartments: extracellular fluid, intracellular Ca2+, and extracellular matrix (bone).

c.

Summary Introduction

To determine: The percentage of filtered Ca2+ to be reabsorbed by the renal tubule.

Introduction: The Ca2+ loss from the body occurs primarily through the kidneys, with a small amount excreted in feces.

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A 24hr increase of GFR from 90ml/min to 120 ml/min because of a change of filtration fraction from 0.15 to 0.2 with no change of 24 hr water and sodium intake is expected to cause the following: O A. Decrease renal oxygen consumption OB. Decrease body water OC. Decrease renal plasma flow OD. Decrease volume of urine
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