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Pre-Lab Questions
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1
The size of the thoracic cavity is increased by contractions of the following muscles except the
A)diaphragm.
B)external intercostals.
C)pectoralis minor.
D)external oblique.
2
A ________ is an instrument to measure air volumes during breathing.
A)flow meter
B)spirometer
C)lung function model
D)capacity meter
3
The _____ is the maximum volume of air that can be exhaled after taking the deepest breath possible.
A)tidal volume
B)expiratory reserve volume
C)vital capacity
D)total lung capacity
4
Tidal volume is estimated to be about
A)500 mL.
B)1,200 mL.
C)3,600 mL.
D)4,800 mL.
5
A normal resting breathing rate is about ______ breaths per minute.
A)5-10
B)12-15
C)16-20
D)21-30
6
The contraction of the diaphragm increases the size of the thoracic cavity.
A)True
B)False
7
Vital capacity is the total of tidal volume, expiratory reserve volume, and residual volume.
A)True
B)False
8
Vital capacities gradually decrease as a person continues to age.
A)True
B)False





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