PhysioEx Exercise 5 Activity 4
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Apr 3, 2024
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PhysioEx Lab Report
Exercise 5: Cardiovascular Dynamics
Activity 4: Studying the E
ff
ect of Blood Pressure on Blood Flow Rate
Name: Emily Delavega, kyla Samavatian, sydnee oshiro
Date: 19 March 2024
Session ID: session-97eed5a6-c91e-0457-fbc6-8814ab310b10
Pre-lab Quiz Results
You scored 0% by answering 0 out of 4 questions correctly.
Experiment Results
Predict Questions
Stop & Think Question
Experiment Data
Flow (ml/min)
Radius (mm)
Viscosity
Length (mm)
Pressure (mm Hg)
35.0
5.0
3.5
50
25
70.1
5.0
3.5
50
50
105.1
5.0
3.5
50
75
140.2
5.0
3.5
50
100
175.2
5.0
3.5
50
125
210.3
5.0
3.5
50
150
245.3
5.0
3.5
50
175
280.4
5.0
3.5
50
200
Post-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
Review Sheet Results
Pressure changes in the cardiovascular system primarily result from
You did not answer this question.
Correct answer: changes in the force of contraction of the heart.
1
What is the driving force for blood fl
ow?
You did not answer this question.
Correct answer: pressure gradient.
2
Which of the following is directly proportional to blood fl
ow?
You did not answer this question.
Correct answer: blood vessel radius and pressure gradient.
3
Arteries close to the heart need to be able to compensate for
You did not answer this question.
Correct answer: pressure changes.
4
Predict Question 1: What e
ff
ect do you think increasing the pressure will have on the fl
uid fl
ow rate?
Your answer: The fl
uid fl
ow rate will increase.
1
Predict Question 2: Do you think a graph plotted with pressure on the X-axis and fl
ow rate on the Y-axis will be
linear (a straight line)?
Your answer: yes.
2
This experiment uses pressure changes to model
You correctly answered: changes in the force of contraction of the heart.
1
The e
ff
ect of increasing pressure was to
You correctly answered: increase fl
ow rate.
1
Blood pressure is measured in
You correctly answered: mm Hg.
2
Which of the following variables has the greatest e
ff
ect on blood fl
ow?
You correctly answered: vessel radius.
3
Blood fl
ow is measured in
You correctly answered: ml/min.
4
Explain the e
ff
ect that pressure changes had on fl
ow rate. How well did the results compare with your prediction?
You did not answer this question.
1
How does the plot di
ff
er from the plots for tube radius, viscosity, and tube length? How well did the results
compare with your prediction?
You did not answer this question.
2
Explain why pressure changes are not the best way to control blood fl
ow.
You did not answer this question.
3
Use your data to calculate the increase in fl
ow rate in ml/min/mm Hg.
You did not answer this question.
4
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