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one of a pair of pyramidal ossicles, the spines of which are in contact with the medial pterygoid lamina, the bases forming the roof of the nasal cavity.
Farlex Partner Medical Dictionary © Farlex 2012
In a fetal skull, one of the two curved plates located on the anterior portion of the body of the sphenoid bone and forming part of the roof of the nasal cavity.
See also: concha
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