Carotid wall of tympanic cavity

Carotid wall of tympanic cavity
Coronal section of right temporal bone.
The medial wall and part of the posterior and anterior walls of the right tympanic cavity, lateral view.
Latin paries caroticus cavi tympani
Gray's subject #230 1042

The Carotid or Anterior Wall is wider above than below; it corresponds with the carotid canal, from which it is separated by a thin plate of bone perforated by the tympanic branch of the internal carotid artery, and by the deep petrosal nerve which connects the sympathetic plexus on the internal carotid artery with the tympanic plexus on the promontory.

At the upper part of the anterior wall are the orifice of the semicanal for the Tensor tympani muscle and the tympanic orifice of the auditory tube, separated from each other by a thin horizontal plate of bone, the septum canalis musculotubarii.

These canals run from the tympanic cavity forward and downward to the retiring angle between the squama and the petrous portion of the temporal bone.

This article incorporates text from a public domain edition of Gray's Anatomy.


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