PhysioEx Exercise 5 Activity 3
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PhysioEx Lab Report
Exercise 5: Cardiovascular Dynamics
Activity 3: Studying the E
ff
ect of Blood Vessel Length on Blood Flow Rate
Name: Megan Krolikowski
Date: 20 May 2024
Session ID: session-426855c9-4796-737a-ef95-4318acf88a3a
Pre-lab Quiz Results
You scored 75% by answering 3 out of 4 questions correctly.
Experiment Results
Predict Question
When the length of the blood vessel increases, which of the following also
increases?
You correctly answered: both friction and surface area.
1
Blood vessel length decreases
You correctly answered: when we lose weight.
2
Blood fl
ow is
You correctly answered: directly proportional to vessel radius to the fourth power.
3
Which of the following correctly describes resistance to fl
ow?
Your answer: Resistance to fl
ow increases with increased vessel radius.
Correct answer: Resistance to fl
ow increases with increased vessel length.
4
Predict Question: What e
ff
ect do you think increasing the fl
ow tube length will
have on the fl
uid fl
ow rate?
Your answer: The fl
uid fl
ow rate will decrease.
1
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex5/act3/
5/20/24, 7
:
09 PM
Page 1 of 7
Stop & Think Questions
Experiment Data
Flow (ml/min)
Radius (mm)
Viscosity
Length (mm)
Pressure (mm
Hg)
90.8
3.0
3.5
10
100
60.6
3.0
3.5
15
100
45.4
3.0
3.5
20
100
36.3
3.0
3.5
25
100
30.3
3.0
3.5
30
100
26.0
3.0
3.5
35
100
22.7
3.0
3.5
40
100
What is the relationship between fl
uid fl
ow and fl
ow tube length?
You correctly answered: They are inversely proportional to each other.
1
Which is more likely to occur on a daily basis?
You correctly answered: changes in blood vessel diameter.
2
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5/20/24, 7
:
09 PM
Page 2 of 7
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:
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