Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Question
Chapter 18.5, Problem 6QC
Summary Introduction
To review:
The overall net filtration pressure in capillary, and whether it is the net absorption or the net filtration that takes place in the capillary.
Introduction:
The colloid osmotic pressure gradient is created due to different concentrations of solutes in the blood and the capillary. The colloid osmotic pressure draws the water inside the capillary because less solute is present in the interstitial fluid and more solute is present in the blood. The hydrostatic pressure moves the water out of the capillary because the hydrostatic pressure inside the capillary is more as compared to the hydrostatic pressure inside the interstitial fluid.
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Hydrostatic pressure inside the capillary = 34 mmHgColloid osmotic pressure of the blood plasma = 27 mmHgHydrostatic pressure in the interstitial fluid = 2 mmHgColloid osmotic pressure in the interstitial fluid = 4 mmHgWhat is the total pressure favoring filtration?What is the total pressure favoring absorption?What is the net effect of these forces on fluid movement across the wall of the capillary?
What four variables determine the net filtration pressure across the capillary wall? Give representative values for each of them at the arteriolar and venous ends of a systemic capillary.
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
Chapter 18 Solutions
Human Anatomy & Physiology (2nd Edition)
Ch. 18.1 - Define the three types of blood vessels in the...Ch. 18.1 - Prob. 2QCCh. 18.1 - Prob. 3QCCh. 18.1 - Prob. 4QCCh. 18.1 - Prob. 5QCCh. 18.1 - 6. How do veins differ structurally and...Ch. 18.1 - Prob. 7QCCh. 18.1 - What are venous valves, and what are their...Ch. 18.1 - Prob. 9QCCh. 18.2 - Prob. 1QC
Ch. 18.2 - Prob. 2QCCh. 18.2 - Prob. 3QCCh. 18.2 - Prob. 4QCCh. 18.2 - Prob. 5QCCh. 18.2 - Prob. 6QCCh. 18.2 - 7. How does mean arterial pressure differ from...Ch. 18.2 - Prob. 8QCCh. 18.2 - Prob. 9QCCh. 18.3 - Prob. 1QCCh. 18.3 - Prob. 2QCCh. 18.3 - Prob. 3QCCh. 18.3 - Prob. 4QCCh. 18.3 - Prob. 5QCCh. 18.3 - Prob. 6QCCh. 18.3 - Prob. 7QCCh. 18.3 - 8. What is circulatory shock, and why is it...Ch. 18.4 - Describe the structure and size of a typical...Ch. 18.4 - 2. List three ways in which substances may cross...Ch. 18.4 - 3. Describe the properties of the three types of...Ch. 18.4 - 4. What is tissue perfusion?
Ch. 18.4 - Prob. 5QCCh. 18.4 - Prob. 6QCCh. 18.4 - Prob. 7QCCh. 18.4 - Prob. 8QCCh. 18.4 - Prob. 9QCCh. 18.5 - What is hydrostatic pressure? How does hydrostatic...Ch. 18.5 - 2. In which direction does the hydrostatic...Ch. 18.5 - 3. What is colloid osmotic pressure? In which...Ch. 18.5 - Prob. 4QCCh. 18.5 - Where in the capillary does net filtration take...Ch. 18.5 - Prob. 6QCCh. 18.6 - List the three branches of the aortic arch.Ch. 18.6 - Prob. 2QCCh. 18.6 - 3. What is the cerebral arterial circle, and what...Ch. 18.6 - Prob. 4QCCh. 18.6 - Which arteries supply the anterior and posterior...Ch. 18.6 - Prob. 6QCCh. 18.6 - Which artery supplies the upper limb?Ch. 18.6 - Trace the arterial supply of the upper limb from...Ch. 18.6 - 9. Which artery supplies the lower limb?
Ch. 18.6 - Trace the arterial supply of the lower limb from...Ch. 18.6 - Prob. 11QCCh. 18.7 - Where do most veins superior to the diaphragm...Ch. 18.7 - Prob. 2QCCh. 18.7 - Where are the dural sinuses located? What drains...Ch. 18.7 - How does drainage of the posterior body wall...Ch. 18.7 - 5. Which abdominal vessels drain straight into...Ch. 18.7 - Prob. 6QCCh. 18.7 - Prob. 7QCCh. 18.7 - Prob. 8QCCh. 18.7 - Prob. 9QCCh. 18.7 - Prob. 10QCCh. 18 - Prob. 1CYRCh. 18 - Locations where vessels connect via collateral...Ch. 18 - 3. The carotid sinus contains:
a....Ch. 18 - 4. Which of the following factors would increase...Ch. 18 - Which of the following would produce a decrease in...Ch. 18 - Fill in the blanks: The two pressures within the...Ch. 18 - The lowest pressure in the systemic circuit occurs...Ch. 18 - Explain the mechanisms that assist in the return...Ch. 18 - Mark the following statements as true or false. If...Ch. 18 - Prob. 10CYRCh. 18 - Capillaries consist of: a. three thin tunics. b....Ch. 18 - List three ways in which substances can cross the...Ch. 18 - Which of the following structures is the leakiest?...Ch. 18 - Prob. 14CYRCh. 18 - 15. The hydrostatic pressure gradient drives water...Ch. 18 - Prob. 16CYRCh. 18 - Match the following arteries with the correct...Ch. 18 - Which of the following is not a common pulse...Ch. 18 - 19. Which of the following vessels does not drain...Ch. 18 - Match the following veins with the correct...Ch. 18 - 1. Explain why a severed artery spurts blood,...Ch. 18 - 2. Explain why a person who is 7 feet tall is...Ch. 18 - Prob. 3CYUCh. 18 - Prob. 1AYKACh. 18 - 2. Mr. Gupta has been diagnosed with nephrotic...Ch. 18 - Predict the effects of each of the following on...Ch. 18 - Prob. 4AYKBCh. 18 - Ms. Rodgers has been diagnosed with secretion of...
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- What is colloid osmotic pressure? In which direction does colloid osmotic pressure drive the movement of water in a capillary?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_forwardWhat force is responsible for moving fluids out of capillaries at the arteriole end and moving fluids back into the capillary at the venule end? What happens to fluids that do not re-enter the capillaries?arrow_forward
- 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?arrow_forwardWhat is different about the capillary filtration occurring at Bowman’s capsule? What are othercapillary beds like?arrow_forwardWhich factor blood pressure or osmotic pressure has the greatest influence on the direction of fluid movement through capillary walls at (a) the venous and of the capillary and (b) the arterial end of the capillary?arrow_forward
- How does the hydrostatic pressure change from the arterial end of a capillary to the venous end of a capillary? Do you see similar changes in colloid osmotic pressure?arrow_forwardWhat is the only solute that has a significant concentration difference across the capillary wall? How does this difference influence water concentration?arrow_forwardHow does Net Filtration Pressure (NFP) measure hydrostatic pressure and what is the relationship to blood pressure?arrow_forward
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