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Sulcus of auditory tube
Groove in the base of the skull fitting the Eustachian canal From Wikipedia, the free encyclopedia
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The lateral half of the great wing of the sphenoid bone articulates, by means of a synchondrosis, with the petrous part of the temporal bone. Between these two bones on the under surface of the skull, is a furrow, the 'sulcus of auditory tubule, for the lodgement of the cartilaginous part of the auditory tube.
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References
This article incorporates text in the public domain from page 150 of the 20th edition of Gray's Anatomy (1918)
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