Which of the following occurs when there is a balance between outward recoil of the chest wall and inward recoil of lungs at rest?
A) FRC is reached.
B) VC is reached.
C) TLC is reached.
D) IC is reached.

Question

Quizplus · Accepted Answer

When there is a balance between the outward recoil of the chest wall and inward recoil of lungs at rest, functional residual capacity (FRC) is reached. FRC is the volume of air present in the lungs at the end of a normal expiration. Thus, option A is correct. VC (vital capacity) is the maximum volume of air that can be exhaled after a maximum inhalation, TLC (total lung capacity) is the maximum volume of air that lungs can accommodate, and IC (inspiratory capacity) is the maximum volume of air that can be inhaled after a normal exhale. However, none of these are relevant to the situation described in the question.

Which of the Following Occurs When There Is a Balance