dictionary help| ethmoid bone | medical dictionary |
<bone>
<anatomy> An irregularly shaped bone lying between the orbital plates of the frontal and anterior to the sphenoid bone; it consists of two lateral masses of thin plates enclosing air cells, attached above to a perforated horizontal lamina, the cribriform plate, from which descends a median vertical or perpendicular plate in the interval between the two lateral masses; the bone articulates with the sphenoid, frontal, maxillary, lacrimal, and palatine bones, the inferior nasal concha, and the vomer; it enters into the formation of the anterior cranial fossa, the orbits, and the nasal cavity.
Synonyms: os ethmoidale.
(05 Mar 2000)
ethmoidal sinuses, ethmoidal veins, ethmoid angle < Prev | Next > ethmoidectomy, ethmoid infundibulum, ethmoiditis
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