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ethmoidal air cell |
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ethmoidal air cell
[ethmoi′dəl] Etymology: Gk, ethmos, sieve, eidos, form one of the numerous small thin-walled cavities in the ethmoid bone of the skull. The cavities are lined with mucous membrane continuous with that of the nasal cavity and lie between the upper part of the nasal cavities and the orbits. Compare frontal sinus, maxillary sinus, sphenoidal sinus. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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