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Jan 9, 2024
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Name: Jay Sippel
Exercise 7: Respiratory System Mechanics: Activity 1: Measuring Respiratory Volumes and Calculating Capacities Lab
Report
Pre-lab Quiz Results
You scored 100% by answering 5 out of 5 questions correctly.
1.
Which of the following statements describing the mechanics of breathing is
false
?
You correctly answered: d. Ventilation relies exclusively on contracting skeletal muscles.
2.
The contraction of which of the following muscles will increase the thoracic cavity volume during inspiration?
You correctly answered: c. the external intercostals
3.
At the beginning of inspiration, the
You correctly answered: b. thoracic cavity volume increases.
4.
At the beginning of expiration, the
You correctly answered: a. pressure in the thoracic cavity increases.
5.
A tidal volume refers to the
You correctly answered: b. amount of air inspired and then expired with each breath under resting conditions.
11/13/19
page 1
11/13/19
page 2
Experiment Results
Predict Question:
Predict Question:
Lung diseases are often classified as obstructive or restrictive. An
obstructive
disease affects
airflow
,
and a
restrictive
disease usually reduces
volumes and capacities
. Although they are not diagnostic, pulmonary function
tests such as forced expiratory volume
(FEV1) can help a clinician determine the difference between obstructive and
restrictive diseases. Specifically, an
FEV1 is the forced volume expired in 1 second.
In obstructive diseases such as chronic bronchitis and asthma, airway radius is decreased. Thus,
FEV1 will
Your answer : a. decrease proportionately.
Stop & Think Questions:
Which muscles contract during quiet expiration?
You correctly answered: d. None of these muscles contract during quiet expiration.
6.
Minute ventilation
is the amount of air that flows 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 in the field below and then click
Submit Data
to record your answer in the lab report.
You answered: 7500 ml/min
11. A useful way to express FEV1 is as a percentage of the forced vital capacity (FVC). Using the FEV1 and FVC values
from the data grid, calculate the FEV1 (%) by dividing the FEV1 volume by the FVC volume (in this case, the VC is equal to
the FVC) and multiply by 100%.
Enter the FEV1 (%) for an airway radius of 5.00 mm in the field below and then click
Submit Data
to record your answer in
the lab report.
You answered: 74
12. A useful way to express FEV1 is as a percentage of the forced vital capacity (FVC). Using the FEV1 and FVC values
from the data grid, calculate the FEV1 (%) by dividing the FEV1 volume by the FVC volume (in this case, the VC is equal to
the FVC) and multiply by 100%.
Enter the FEV1 (%) for an airway radius of 3.00 mm in the field below and then click
Submit Data
to record your answer in
the lab report.
You answered: 70
Experiment Data:
Radius
Flow
(L/min)
TV
ERV
IRV
RV
VC
FEV1
TLC
Breath Rate
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
3.00
975
65
156
401
2244
621
436
2865
15
11/13/19
page 3
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Related Questions
SUBJECT COURSE: ERGONOMICS
REQUIRED: CONCLUSION AND RECOMMENDATION
FOR THE FOLLOWING SCENARIO: (should be 2
paragraphs with 7 sentences each)
We carried out a lab experiment on the stroop test.
According to the results of our analysis using Minitab
ANOVA, there was no error made when we were
carrying out the task.
here are the objectives of the task:
Students should be able to:
1. Understand how human brains process information.
2. Demonstrate compatibility and interference issues.
3. Determine how noise or interference affects
perception.
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Q3. What is the difference between energy and heat transfer? Give examples on both.
Q4. What does the first law of thermodynamics state? Give two examples on the first law of
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weight bearing activities.
Your boss asks you to review the technical report that was generated by the previous test engineer (whose job you now have!) and used to
verify the design. The brief report states the following... "Ti Fix-It plates were manufactured from Ti-6Al-4V (grade 5) and machined into
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QUESTION 7
A model tow-tank test is conducted on a bare hull model at the model design
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ship and model:
Ship
1,100
Model
Length (ft)
Hull Wetted Surface Area (ft2)
Speed (knots)
30
250,000
15
Freshwater
Water
Seawater 50°F
70°F
Projected Transverse Area (ft²)
Cair
7,500
0.875
Appendage Resistance (% of bare hull)
10%
Hull Resistance (Ibf)
20
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●
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*
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