Otic ganglion the tensor palati and the tensor tympani pass through the ganglion without relay. The ganglion is connected to the chorda tympani nerve and also to the nerve of the pterygoid canal. These pathways provide an alternate pathway of taste from the anterior two thirds of the tongue. These fibers do not pass through the middle ear. Frey's syndrome in which salivation will induce perspiration at the parotid region, accompanied by erythema. Otic ganglion The otic ganglion is a small parasympathetic ganglion located immediately below the foramen ovale in the infratemporal fossa and on the medial surface of the mandibular nerve.
Otic vesicle suggested to play a role in otic induction in mice, as were Msx genes suggested to play a role in otic vesicle formation in chicks. Pax8 is expressed during the entirety of otic vesicle formation. Other genes found in the otic vesicle across species that may play a role in patterning include Hmx, Fox, Dlx, and Gbx genes. Formation of the otic vesicle has been studied extensively in developmental model organisms including chick, Xenopus, zebrafish, axolotyl, & mouse. The transition from the otic placode to the otic vesicle occurs during the 19th somite stage in Zebrafish, Xenopus, and chick. In