EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Chapter 50, Problem 2S
John’s doctor is concerned that John’s kidneys may not be functioning properly due to a circulatory condition. The doctor wants to determine if the blood volume flowing through the kidneys (called renal blood flow rate) is within normal range. Calculate what would be a “normal” renal blood flow rate based on the following information:
John weighs 90 kg. Assume a normal total blood volume is 80 mL/kg of body weight, and a normal heart pumps the total blood volume through the heart once per minute (cardiac output). Also assume that the normal renal blood flow rate is 21% of cardiac output.
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Given the following pressures on the venous end of a capillary, calculate the NET pressure and determine if this pressure is in favor of filtration or reabsorption.
Blood pressure: 15 mmHg
Hydrostatic pressure in the tissues: -3 mmHg
Colloid Osmotic Pressure in a capillary: 28 mmHg
Colloid Osmotic Pressure in tissue: 8 mmHg
You are designing the arterial blood vessels that go to the kidney. The first part of
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is maximized. Assume that blood viscosity (h) will not be changed.
Given the following values, calculate the fluid movement between capillaries and tissues:
hydrostatic pressure of the capillary = 25 mm Hg
hydrostatic pressure of the interstitial fluid = 5 mm Hg
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colloid osmotic pressure of the interstitial fluid = 5 mm Hg
Group of answer choices
30 mm Hg into the capillary
30 mm Hg out of the capillary
10 mm Hg into the capillary
10 mm Hg out of the capillary
Chapter 50 Solutions
EBK BIOLOGY
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