Innervation of the mucous membrane of the tympanic cavity Most of them arise from the tympanic nerve, which arises from the ninth cranial nervous system, which coordinates with the branches of the face. Trigeminal nerve and internal carotid artery The posterior mastoid of the middle ear is represented by the mastoid process. There are many air cells connected to the tympanic cavity through the fossa and fossa in the posterior portion of the tympani's gap. In newborns, the mastoid process is not developed.

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