| Palfyn | (Palfin) Jean, Belgian surgeon and anatomist, 1650-1730. See: Palfyn's sinus. (05 Mar 2000) |
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| Palfyn's sinus | A space within the crista galli of the ethmoid described as communicating with the ethmoidal and frontal sinus's. Paranasal sinuses, the paired air-filled cavities in the bones of the face lined by mucous membrane continuous with that of the nasal cavity; these sinus's are the frontal, sphenoidal, maxillary, and ethmoidal. Synonym: sinus paranasales. (05 Mar 2000) |