# functional residual capacity

> volume of air in the lungs at the end of passive expiration

**Wikidata**: [Q1073808](https://www.wikidata.org/wiki/Q1073808)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Functional_residual_capacity)  
**Source**: https://4ort.xyz/entity/functional-residual-capacity


## References

1. Freebase Data Dumps. 2013
2. UMLS 2023
3. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)