Question

question 6 of 10
gary exhaled as much as he could out of his lungs, but no matter how hard he tried, some air remained. what is this lung volume called that remained in garys lungs even after maximal expiratory effort?
tidal volume or tv
total lung capacity or tlc
residual volume or rv
expiratory reserve volume or erv

Explanation:

• Tidal Volume (TV) is the amount of air inhaled or exhaled during normal breathing.
• Total Lung Capacity (TLC) is the total volume of air in the lungs after a maximal inhalation.
• Residual Volume (RV) is the volume of air remaining in the lungs after a maximal exhalation.
• Expiratory Reserve Volume (ERV) is the additional air that can be exhaled after a normal exhalation.

Since the question is about the air remaining after maximal expiratory effort, we need to consider the definition of each lung volume.

Answer:

C. Residual Volume or RV