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ethmoidal crest

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n.

A ridge on the nasal surface of the upper jawbone that attaches to the middle nasal concha.nasal concha
A ridge on the palatine bone to which the middle nasal concha attaches.nasal concha

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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