Air moves into the lungs because
A) the gas pressure in the lungs is less than outside pressure.
B) the volume of the lungs decreases with inspiration.
C) the thorax is muscular.
D) contraction of the diaphragm decreases the volume of the pleural cavity.
E) All of the answers are correct.
Correct Answer:
Verified
Q13: The upper respiratory tract includes all EXCEPT
Q14: The lungs are enclosed in _ membranes.
A)
Q15: Surfactant
A) protects the surface of the lungs.
B)
Q16: The actual sites of gas exchange within
Q17: The lower respiratory tract includes
A) all of
Q19: When the diaphragm and external intercostal muscles
Q20: The airway between the larynx and the
Q21: In the lungs, the
A) blood flow rate
Q22: In quiet breathing,
A) inspiration and expiration involve
Q23: Flow of air
A) is directly proportional to
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