Abducens nucleus

The abducens nucleus is the originating nucleus from which the abducens nerve (VI) emerges—a cranial nerve nucleus. This nucleus is located beneath the fourth ventricle in the caudal portion of the pons, medial to the sulcus limitans.Nuclei of origin of cranial motor nerves schematically represented; lateral view.Scheme showing central connections of the optic nerves and optic tracts.Figure showing the mode of innervation of the Recti medialis and lateralis of the eye.Axial section of the Brainstem (Pons) at the level of the Facial ColliculusVestibulo-ocular reflexBrain stem sagittal sectionSection through lower pons. Abducens nucleus is labeled #4. The abducens nucleus is the originating nucleus from which the abducens nerve (VI) emerges—a cranial nerve nucleus. This nucleus is located beneath the fourth ventricle in the caudal portion of the pons, medial to the sulcus limitans. The abducens nucleus along with the internal genu of the facial nerve make up the facial colliculus, a hump at the caudal end of the medial eminence on the dorsal aspect of the pons.