The ethmoidal sinuses or ethmoidal air cells of the ethmoid bone are two of the four paired paranasal sinuses. They are a variable in both size and number of small cavities in the lateral mass of each of the ethmoid bones and cannot be palpated during an extraoral examination. They are divided into the anterior, middle and posterior groups (see be...
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http://en.wikipedia.org/wiki/Ethmoid_sinus
A type of paranasal sinus (a hollow space in the bones around the nose). Ethmoid sinuses are found in the spongy ethmoid bone in the upper part of the nose between the eyes. They are lined with cells that make mucus to keep the nose from drying out.
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http://www.cancer.gov/dictionary?expand=E
Numerous small thin-walled spaces or air cells in the ethmoid bone, where they form an ethmoidal labyrinth. ... (12 Dec 1998) ...
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http://www.encyclo.co.uk/local/20973
The paranasal sinus located within the ethmoid bone, between the orbits, below the brain, and above the nasal cavity.
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http://www.encyclo.co.uk/local/21447
Ethmoid sinus: A collection of air cells within the ethmoid bone, a spongy bone which makes up the front of the floor of the skull and the roof of the nose. From the Greek ethmos, sieve + eidos, resemblance = like a sieve. Common Misspellings: ethmoid sinius
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http://www.medterms.com/script/main/art.asp?articlekey=31868
[
n] - a sinus of the meatuses of the nasal cavity (behind the bridge of the nose)
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http://www.webdictionary.co.uk/definition.php?query=ethmoid%20sinus
ethmoidal sinus noun a sinus of the meatuses of the nasal cavity (behind the bridge of the nose)
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https://www.encyclo.co.uk/local/20974
No exact match found.
