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Spine of Henle

The inner end of the external acoustic meatus is closed, in the recent state, by the tympanic membrane; the upper limit of its outer orifice is formed by the posterior root of the zygomatic process, immediately below which there is sometimes seen a small spine, the suprameatal spine also called the spine of Henle, situated at the upper and posterior part of the orifice.

MAC: mastoid air cells; SH: spine of Henle; SMC: suprameatal crest.

spine_of_henle.txt · Last modified: 2016/01/30 11:28 (external edit)