PhysioEx Exercise 5 Activity 1
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PhysioEx Exercise 5 Activity 1
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PhysioEx Lab Report
Exercise 5: Cardiovascular Dynamics
Activity 1: Studying the Effect of Blood Vessel Radius on Blood Flow Rate
Name: Brittney Saenz
Date: 23 October 2023
Session ID: session-cef49434-5c0e-2ee5-f1f2-be207daaa5fe
Pre-lab Quiz Results
You scored 100% by answering 5 out of 5 questions correctly.
Experiment Results
Predict Questions
Stop & Think Questions
Blood flow is measured in
You correctly answered:
ml/min.
1
Which of the following has the greatest effect on blood flow?
You correctly answered:
blood vessel radius.
2
Which of the following would
not
result in a decrease in the blood vessel radius?
You correctly answered:
vasodilation.
3
The diameter of the blood vessel is the same as
You correctly answered:
two times the radius of the blood vessel.
4
The opening of the blood vessel where the blood flows is called the
You correctly answered:
lumen.
5
Predict Question 1: What do you think will happen to the flow rate if the radius is increased
by 0.5 mm?
Your answer:
The flow rate will increase.
1
Predict Question 2: Do you think a graph plotted with radius on the X-axis and flow rate on
the Y-axis will be linear (a straight line)?
Your answer:
no.
2
10/23/23, 10:07 PM
PhysioEx Exercise 5 Activity 1
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Experiment Data
Flow Rate
(ml/min)
Radius (mm)
Viscosity
Length (mm)
Pressure (mm
Hg)
4.0
1.5
1.0
50
100
12.6
2.0
1.0
50
100
30.7
2.5
1.0
50
100
Post-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
What is the driving force for blood flow?
You correctly answered:
pressure gradient.
1
How does the body increase the blood vessel radius?
You correctly answered:
smooth muscle relaxation.
2
The variable that you altered in this activity was
You correctly answered:
vessel radius.
1
Vessel radius and fluid flow
You correctly answered:
are directly proportional.
2
After a heavy meal, when we are relatively inactive, we might expect blood vessels in the
skeletal muscles to be somewhat
and the blood vessels in the digestive organs to be
somewhat
.
You correctly answered:
constricted, dilated.
3
10/23/23, 10:07 PM
PhysioEx Exercise 5 Activity 1
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3/3
Review Sheet Results
When you increased the flow tube radius, the fluid flow rate
You correctly answered:
increased.
4
Explain how the body establishes a pressure gradient for fluid flow.
Your answer:
by heart contraction the pressure gradient is established.
1
Explain the effect that the flow tube radius change had on flow rate. How well did the results
compare with your prediction?
Your answer:
it is increased as predicted.
2
Describe the effect that radius changes have on the laminar flow of a fluid.
Your answer:
A smaller radius reduces the amount of fluid that can flow while increasing the radius can
allow more fluid to flow.
3
Why do you think the plot was not linear? (Hint: look at the relationship of the variables in
the equation). How well did the results compare with your prediction?
Your answer:
because the radius has changed and more fluid can flow each time.
4
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Example 10.5 A helical tension spring is used in
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Step III Numa
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Part III Capstone Problem
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Eile Edit World View Object Define Measure Script Window Help
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圖|& 品凸?
Time
Length of Spring 22
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dx
Center of Mass of Rectangle 2
5.000
Tension of Rope 3
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IFI
... N
ot
rot
***lad
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Velocity of Center of Mass of Rectangle 2
Vx Vx
V Vy
MM
Ve
- m/s
m/s
3.00
*** m/s
Vo
..* lad/s
2 00
Center of Mass of Rectangle 1
1.000
tol
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*.* rad
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Ve
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A Ay
AUJAI
Ae
--- m/s^2
... m/s^2
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.-- rad/s^2
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5. Two cables are tied to the 2.0 kg ball shown below. The ball revolves in a horizontal
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© 2013 Pearson Education, Inc.
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