Functional residual capacity

Functional residual capacity (FRC) is the volume of air present in the lungs at the end of passive expiration.^[1] At FRC, the opposing elastic recoil forces of the lungs and chest wall are in equilibrium and there is no exertion by the diaphragm or other respiratory muscles.^[1]

^ ^a ^b Hopkins E, Sharma S. Physiology, Functional Residual Capacity. [Updated 2022 Jan 4]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK500007/

[Hopkins2022-1] Hopkins E, Sharma S. Physiology, Functional Residual Capacity. [Updated 2022 Jan 4]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK500007/

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