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Transverse crest

transverse crest --> transverse crest of internal acoustic meatus

A horizontal ridge that divides the fundus of the internal acoustic meatus into a superior and an inferior area. In the former are the introitus of the facial canal and openings for the branches of the vestibular nerve to the utricle and to the ampullae of the anterior and lateral saemicircular canals. In the latter are openings for the cochlear nerve, and for branches of the vestibular nerve to the saccule and to the ampulla of the posterior saemicircular canal.

Synonym: crista transversa, falciform crest, transverse crest.


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Quadratus Lumborum

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by raghda
Thu Oct 04, 2007 11:21 pm
 
Forum: Human Biology
Topic: Quadratus Lumborum
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