At approximately what point during a maximum inspiration does the chest wall reach its natural resting level?
a. Approximately 30% of the VC
b. Approximately 40% of the total lung ca-pacity (TLC)
c. Approximately 70% of the VC
d. Approximately 90% of the VC
ANS: C
When lung volume nears 70% of the VC, the chest wall reaches its natural resting level.
Health Professions
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