Pradvola-cochlear nerve
Last reviewed: 23.04.2024
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The pre-vertebral nerve (n. Vestibulocochlearis) is formed by sensitive nerve fibers from the organs of hearing and balance. On the ventral surface of the brain, the pre-cochlear nerve leaves behind the bridge, laterally from the facial nerve. Then it goes into the internal auditory canal, where it divides into the pre-door and cochlear parts.
The vestibular part (pars [nervus] vestibularis) of the pre-cochlear nerve is formed by processes of bipolar neurons of the vestibuldre (ganglion vestibuldre) located at the bottom of the internal auditory canal. The peripheral processes of neurons of the vestibular node form the anterior, posterior and lateral ampullar nerves (n., Ampullares anterior, posterior and lateralis), elliptical-sacral-ampullar nerve (n. Utriculoampullar) and spherically-saccular nerve (n. All these thin nerves end in receptors in the membranous labyrinth of the inner ear. The central processes of these neurons form the vestibule of the pre-cochlear nerve, which is directed to the vestibule nuclei of the brainstem.
The cochlear portion (pars [nervus] cochlearis) of the pre-cochlear nerve is formed by the central processes of the bipolar neurons of the cochlear node - the spiral cochlea spiral node (ganglion spirale cohleae) located in the cochlear spiral canal. The central processes of these neurons are directed to the cochlear nuclei located in the bridge cover. Peripheral processes of the neurons of the cochlear node begin with receptors in the spiral organ of the cochlea of the inner ear.
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