# frontal sinus

> one of the four pairs of paranasal sinuses that are situated behind the brow ridges

**Wikidata**: [Q918118](https://www.wikidata.org/wiki/Q918118)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Frontal_sinus)  
**Source**: https://4ort.xyz/entity/frontal-sinus


## References

1. Integrated Authority File
2. Foundational Model of Anatomy
3. Freebase Data Dumps. 2013
4. [Source](http://www.bartleby.com/107/223.html)
5. BabelNet
6. [Source](https://ncithesaurus.nci.nih.gov/ncitbrowser/)
7. [Source](http://www.unifr.ch/ifaa/Public/EntryPage/TA98%20Tree/Alpha/All%20KWIC%20W%20LA.htm)
8. National Library of Israel Names and Subjects Authority File
9. KBpedia
10. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)