Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 53.3, Problem 1CS
Core Skill: Modeling The goal of this modeling challenge is to make a model that depicts the relative movement of fluid between a capillary and the interstitial fluid when the amount of protein in an animal's blood is abnormally low.
Model of fluid movement into and out of a capillary
Modeling Challenge: In the simplified model of fluid movement between a capillary and interstitial fluid on the right, two sets of arrows are used to indicate the net movement of fluid at two places along a capillary: near the arteriole and near the venule. The length of an arrow represents the relative amount of fluid moving from one compartment to the other. Let’s assume that the protein concentration of the blood becomes lower than normal (this could happen, for example, in a malnourished animal). Draw a model like the one given with arrows showing the relative fluid movements at the arterial and venule ends of the capillary under these new conditions. Remember to use the length of an arrow to indicate the relative amount of fluid movement; a longer arrow represents a greater amount of fluid moving into or out of the capillary.
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Students have asked these similar questions
The effect of length on flow rate. A: the fluid reservoir is placed on top of the bench (Figure 2A) to give a pressure head. This is connected to the flow module by rubber tubing with a clamp on it. A 5-mL volumetric flask is used to collect fluid, and the time taken with different lengths of tubes is recorded on a stopwatch. (Figure 2B) The calculated flow rate plotted against the length of tube.
a. Interpret the graph/data
b. Would you expect the length of blood vessels to change in the body as a means of controlling flow? Comment on your answer.
c. Is this likely to be a common mechanism for controlling blood flow to different tissues?
EXERCISE 2. BLOOD PRESSURE AND PULSE ON BIOPAC:
Look for the regular vertical 'blips' on the graph as the pressure is released in the cuff. The first vertical
'blip' is systole; to measure, follow the dotted line and read the pressure on the y axis. Write the answer
below. Repeat that procedure for the last vertical 'blip', which would correspond with diastole.
210.00
190.00
E
170
170.00
150.00
В
130.00
130
110.00
90
90 00
T0.00
50 30
50
30.00
10 00
-10.00
31.00
1.00
A
.00
A. LABEL the that corresponds with the Biopac Recording above:
1. The area above systole
2. The recording that corresponds to systole
3. The recording that corresponds to diastole
4. The area of no blood flow
5. The first pulse after systole
B. What is the subject's blood pressure? (systole)
mm Hg /
mm Hg (diastole )
How to solve this one?
Calculate the daily rate of maintenance fluids and the IV hourly flow rate for a child who
weighs 25 kg.
Chapter 53 Solutions
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