Spirometry lab
Becca, Chelle, Trey, Kolin
Raw Data Graph
Group and Class Data
All volumes
are in liters
Height (in cm)
Tidal Volume (TV)
My Data
Class Avg.
Female
Class Avg. Male
175.26
163.205
176.53
0.1
0.5
0.1
5
1
4
1.1
1.6
1.8
6.2
3.9
6.1
≈1.5
≈1.5
≈1.5
7.7
5.5
7.6
Inspiratory Reserve (IRV)
Expiratory Reserve (ERV)
Vital Capacity (VC)
Residual Volume (RV)
Total Lung Capacity (TLC)
Data Analysis
1. What was your Tidal Volume (TV)? How
does your TV compare with other students in
the class who are similar to your height?
Trey’s TV was 0.1 which was exactly the
male average for our class. It closely
compares with Ben’s TV because they are
about the same height.
Data Analysis
Volume and Capacity (L)
• Create a graph using your
values and class values for
Tidal Volume (Y axis) and
height (X axis). Create another
line on the same graph for
Vital Capacity (Y axis) and
height (X axis). Make sure
your graph has a title, labels
and key.
• Use complete sentences to
describe any correlation you
see between the two
variables, (lung volume and
height) or explain why there
may not be a relationship
between these data.
Class Tidal Volumes and Vital
Capacities by Height
7
6
5
4
3
Tidal Volume
2
Vital Capacity
1
0
150
155
160
165
Height (cm)
170
175
180
Data Analysis
1.
2.
3.
4.
5.
6.
You and a partner should observe each other to determine your respiratory rate
(breaths / min.) 12 breaths/min.
Use your respiratory rate to calculate your Minute Volume at rest: (TV 
breaths/minute) = Minute Volume at rest ) .07 x 12= .84
If you are taking shallow breaths (TV = 0.20 L) to avoid severe pain from rib
fractures, what respiratory rate will be required to achieve the same minute
volume? Show your work! .84/.20= 4.2
Exposure to occupational hazards such as coal dust, silica dust, and asbestos may
lead to fibrosis, or scarring of lung tissue. With this condition, the lungs become
stiff and have more “recoil.” What would happen to TLC and VC under these
conditions? The TLC and VC would decrease because the stiff lungs would make
it harder to inhale.
In severe emphysema there is destruction of lung tissue and reduced recoil.
What would you expect to happen to TLC and VC? The TLC and VC would
decrease because it would make it harder to exhale.
What would you expect to happen to your Expiratory Reserve Volume when you
are treading water in a lake? Explain your reasoning.