PhysioEx Exercise 5 Activity 7
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Date
Dec 6, 2023
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PhysioEx Lab Report
Exercise 5: Cardiovascular Dynamics
Activity 7: Compensation in Pathological Cardiovascular Conditions
Name: Adilene Madrid
Date: 25 February 2023
Session ID: session-05e8bd9e-6dda-37e3-a28e-5f53ffaf3493
Pre-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
Experiment Results
Predict Questions
Stop & Think Questions
Which of the following could cause an increase in peripheral resistance in the blood vessel?
You correctly answered:
atherosclerosis.
1
Which structures in the heart ensure that one-way flow occurs?
You correctly answered:
valves.
2
Which of the following might be seen in both the diseased heart and the athlete's heart?
You correctly answered:
thicker myocardium.
3
The type of resistance increased in aortic valve stenosis is
You correctly answered:
increased left-ventricular afterload.
4
Predict Question 1: You will now test three mechanisms to compensate for the decrease in
flow rate caused by the decreased flow tube radius. Which mechanism do you think will
have the greatest compensatory effect?
Your answer:
decreasing the pressure in the right (destination) beaker.
1
Predict Question 2: What do you think will happen if the pump pressure and the beaker
pressure are the same?
Your answer:
Flow will stop.
2
Narrowing of the right flow tube radius simulates
1
Experiment Data
Condition
Flow
(ml/min)
Rad. L
(mm)
Rad. R
(mm)
Str. V (ml)
Rate
(strokes/min)
Press. L
(mm Hg)
Press.
Dif. R
(mm Hg)
Normal
5086.8
3.0
3.0
70
72.7
40
40
Aortic stenosis
3310.0
3.0
2.5
70
47.3
40
40
Increased
preload
3892.9
3.5
2.5
70
55.6
40
40
Increased
preload
4256.7
4.0
2.5
70
60.8
40
40
Increased
preload
4479.5
4.5
2.5
70
64.0
40
40
Increased
contractility
3826.3
3.0
2.5
70
54.7
40
50
Increased
contractility
4270.3
3.0
2.5
70
61.0
40
60
Increased
contractility
4656.3
3.0
2.5
70
66.5
40
70
Decreased
afterload
3826.3
3.0
2.5
70
54.7
40
50
Decreased
afterload
4270.3
3.0
2.5
70
61.0
40
60
Decreased
afterload
4656.3
3.0
2.5
70
66.5
40
70
Post-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
You correctly answered:
aortic valve stenosis.
What does increasing the pump pressure correspond to in the human heart?
You correctly answered:
increasing the force of contraction.
2
What does decreasing the right (destination) beaker correspond to in the human heart?
You correctly answered:
decreasing afterload.
3
Which of the following compensatory mechanisms was
not
tested?
You correctly answered:
decreasing the pressure in the left (source) beaker.
1
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