Loose Leaf For Integrated Principles Of Zoology
18th Edition
ISBN: 9781260411140
Author: Cleveland P Hickman Jr. Emeritus, Susan L. Keen, David J Eisenhour Professor PhD, Allan Larson, Helen I'Anson Associate Professor of Biology
Publisher: McGraw-Hill Education
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Chapter 31, Problem 10RQ
Summary Introduction
To determine: The net effect on fluid movement between capillaries and tissue spaces based on the given data.
Introduction: When hydrostatic pressure is greater than the colloid pressure, the fluid is pushed out of the capillaries. When the colloid osmotic pressure is greater than the hydrostatic pressure, the fluid is pushed inside the capillaries.
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Blood pressure at the arterial end of capillaries is about 40 mm Hg in humans. If blood pressure at the venous end is about 15 mm Hg, and colloid osmotic pressure is 25 mm Hg throughout, what is the net effect on fluid movement between capillaries and tissue spaces?
Assume the following pressures on the arterial end of a capillary:
Plasma hydrostatic pressure = 35mmHg
Plasma osmotic pressure = 26mmHg
Interstitial hydrostatic pressure = 0mmHg
Interstitial osmotic pressure = 1mmHg
Given the pressures listed above, what is happening to fluid in this scenario?
A. Fluid is leaving the capillary
B. Fluid is entering the capillary
C. Fluid is leaving the cell
D. Fluid is entering the cell
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
colloid osmotic pressure of the capillary = 15 mm Hg
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 31 Solutions
Loose Leaf For Integrated Principles Of Zoology
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- How do variables such as length and diameter of a tube and viscosity of a liquid (blood) affect the flow rate of a fluid through a tube (blood vessel)arrow_forwardWhat is colloid osmotic pressure? In which direction does colloid osmotic pressure drive the movement of water in a capillary?arrow_forwardHow does blood pressure compare with the interstitial fluid pressure in arterial capillaries? With the interstitial fluid pressure in venous capillaries?arrow_forward
- What creates the osmotic pressure gradient between the plasma and the interstitial fluid?arrow_forwardYou are studying bulk flow in a tissue. You have measured the following: Blood pressure at the arterial end of the capillary – 30mmHg Osmotic pressure at the arterial end of the capillary – 20 mmHg partial pressure of oxygen at the arterial end of the capillary – 42 mmHg; partial pressure of CO2 – 40mmHg partial pressure of O2 at the venous end – 42 mmHg; partial pressure of CO2 – 46mmHg Blood pressure at the venous end of the capillary – 14mmHg Osmotic pressure at the venous end of the capillary – 20 mmHg Pick all that would apply A)the 10 mm Hg pressure difference will drive blood plasma into the interstitial fluid B)the 6 mm Hg pressure difference will drive blood plasma into the interstitial fluid C)the hydrostatic pressure declines from the arterial side to the venous side because oxygen is lost. D)the pH is lower on the arterial side than on the venous side. E)the osmotic pressure remains constant due to carbon dioxide compensation. F)oxygen is taken up by the…arrow_forwardHow do hydrostatic and osmotic pressures determine fluid movement across the walls of capillaries?arrow_forward
- By how much would a blood vessel need to expand using vasodilation to increase blood flow by 200% (3x)?arrow_forwardWhat forces drive fluid to move OUT of capillaries and INTO capillaries?arrow_forwardIf 2 L of blood were injected into a normal human body, what influence would this injection have on blood pressure, cardiac output, preload and afterload?arrow_forward
- What is the overall net filtration pressure in a capillary?arrow_forwardIf an accident victim loses 1 L of blood, why would an intravenous infusion of a liter of plasma be more effective for replacing the lost volume than infusing a liter of an equally concentrated crystalloid (e.g., sodium chloride) solution?arrow_forwardDescribe what Bulk flow across a capillar bed. A. In your description, define what Net filtration pressure is, hydrostatic pressure, and colloid osmotic pressure. B. What should occur at the arterial end of the capillary bed and what should occur at the venous end of the capillary bed? ( in other words, tell me if fluid should be moving out capillary or should be moving into capillary)arrow_forward
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