PhysioEx Exercise 7 Activity 1
pdf
keyboard_arrow_up
School
Richland Community College *
*We aren’t endorsed by this school
Course
202
Subject
Mechanical_engineering
Date
Jun 26, 2024
Type
Pages
7
Uploaded by Cooleymame
PhysioEx Lab Report
Exercise 7: Respiratory System Mechanics
Activity 1: Measuring Respiratory Volumes and Calculating Capacities
Name: Tania Chaney
Date: 24 June 2024
Session ID: session-42a1494f-56e1-2e85-f36d-fd3c6e9854d4
Pre-lab Quiz Results
You scored 100% by answering 5 out of 5 questions correctly.
Experiment Results
Predict Question
Which of the following statements describing the mechanics of breathing is false
?
You correctly answered: Ventilation relies exclusively on contracting skeletal muscles.
1
The contraction of which of the following muscles will increase the thoracic cavity volume
during inspiration?
You correctly answered: the external intercostals.
2
At the beginning of inspiration, the
You correctly answered: thoracic cavity volume increases.
3
At the beginning of expiration, the
You correctly answered: pressure in the thoracic cavity increases.
4
A tidal volume refers to the
You correctly answered: amount of air inspired and then expired with each breath under
resting conditions.
5
Predict Question: Lung diseases are often classi
fi
ed as obstructive or restrictive. An
obstructive
disease a
ff
ects air
fl
ow
, and a restrictive
disease usually reduces volumes
and capacities
. Although they are not diagnostic, pulmonary function tests such as forced
expiratory volume (FEV
) can help a clinician determine the di
ff
erence between
obstructive and restrictive diseases. Speci
fi
cally, an FEV
is the forced volume expired in 1
second.
1
1
1
PhysioEx Exercise 7 Activity 1
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex7/act1/
1 of 7
6/24/2024, 9:08 PM
Stop & Think Questions
Experiment Data
Radius
(mm)
Flow (ml/
min)
TV
(ml)
ERV
(ml)
IRV
(ml)
RV
(ml)
VC
(ml)
FEV
(ml)
TLC
(ml)
BPM
5.00
7485
499
----
---
---
---
---
---
15
5.00
7500
500
1200
3091
1200
4791
3541
5991
15
4.50
4920
328
787
2028
1613
3143
2303
4756
15
4.00
3075
205
492
1266
1908
1962
1422
3871
15
3.50
1800
120
288
742
2112
1150
822
3262
15
In obstructive diseases such as chronic bronchitis and asthma, airway radius is decreased.
Thus, FEV
will
Your answer: decrease proportionately.
1
Which muscles contract during quiet expiration?
You correctly answered: none of these muscles contract during quiet expiration.
1
Minute ventilation
is the amount of air that fl
ows into and then out of the lungs in a
minute. Minute ventilation (ml/min) = TV (ml/breath) x BPM (breaths/min).
Using the values from the second recorded measurement, enter the minute ventilation.
You answered: 7500 ml/min.
2
A useful way to express FEV
is as a percentage of the forced vital capacity (FVC). Using
the FEV
and FVC values from the data grid, calculate the FEV
(%) by dividing the FEV
volume by the FVC volume (in this case, the VC is equal to the FVC) and multiply by 100%.
Enter the FEV
(%) for an airway radius of 5.00 mm.
You answered: 73.9 %.
3
1
1
1
1
1
A useful way to express FEV
is as a percentage of the forced vital capacity (FVC). Using
the FEV
and FVC values from the data grid, calculate the FEV
(%) by dividing the FEV
volume by the FVC volume (in this case, the VC is equal to the FVC) and multiply by 100%.
Enter the FEV
(%) for an airway radius of 3.00 mm.
You answered: 70.2 %.
4
1
1
1
1
1
1
PhysioEx Exercise 7 Activity 1
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex7/act1/
2 of 7
6/24/2024, 9:08 PM
3.00
975
65
156
401
2244
621
436
2865
15
Baseline
Airway radius = 5.00 mm
Airway radius = 4.50 mm
PhysioEx Exercise 7 Activity 1
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex7/act1/
3 of 7
6/24/2024, 9:08 PM
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
Airway radius = 4.00 mm
Airway radius = 3.50 mm
PhysioEx Exercise 7 Activity 1
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex7/act1/
4 of 7
6/24/2024, 9:08 PM
Airway radius = 3.00 mm
Post-lab Quiz Results
You scored 80% by answering 4 out of 5 questions correctly.
To calculate a person's vital capacity, you need to know the TV, ERV, and
You correctly answered: IRV.
1
Measuring a person's FVC means that you are measuring
You correctly answered: the amount of air that can be expelled when the subject takes
the deepest possible inspiration and then forcefully expires as completely and rapidly as
possible.
2
PhysioEx Exercise 7 Activity 1
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex7/act1/
5 of 7
6/24/2024, 9:08 PM
Review Sheet Results
Measuring a person's FEV
means that you are measuring
You correctly answered: the amount of the VC that is expired during the fi
rst second of
the FVC test.
3
1
For a person su
ff
ering an asthma attack, inhaler medications are expected to
Your answer: reduce the airway radius.
Correct answer: reduce the airway resistance.
4
Which of the following values does not
include the ERV?
You correctly answered: TV.
5
What would be an example of an everyday respiratory event the ERV simulates?
Your answer:
Hu
ffi
ng and Pu
ffi
ng, blowing out birthday candles, or playing an instrument that requires blowing.
1
What additional skeletal muscles are utilized in an ERV activity?
Your answer:
internal intercostal muscles, and the abdominal muscles..
2
What was the FEV
(%) at the initial radius of 5.00 mm?
Your answer:
73.9%.
3
1
What happened to the FEV
(%) as the radius of the airways decreased? How well did the
results compare with your prediction?
Your answer:
I was correct in my opinion.
4
1
Explain why the results from the experiment suggest that there is an obstructive, rather
than a restrictive, pulmonary problem.
Your answer:
Because the FEV1/FVC ratio is lower than normal. In COPD there is di
ffi
culty in expelling 5
PhysioEx Exercise 7 Activity 1
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex7/act1/
6 of 7
6/24/2024, 9:08 PM
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help
air quickly due to narrow airways.
PhysioEx Exercise 7 Activity 1
https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex7/act1/
7 of 7
6/24/2024, 9:08 PM