Which of the following is TRUE when the lung volume is equal to the functional residual capacity?

Question

Quizplus · Accepted Answer

The functional residual capacity (FRC) is the volume of air present in the lungs at the end of passive expiration. At this point, the elastic recoil forces of the lungs, which tend to collapse the lungs, are exactly balanced by the elastic recoil forces of the chest wall, which tend to expand the chest. This balance results in a situation where no additional effort is required to keep the lungs open at this particular volume, making option D correct.

Which of the Following Is TRUE When the Lung Volume