A<unk>  is a collection of neurons (gray matter) in the brain stem that is associated with one or more<unk><unk> s. Axons carrying information to and from the<unk><unk> s form a synapse first at these nuclei. Lesions occurring at these nuclei can lead to effects resembling those seen by the severing of<unk> (s) they are associated with. All the nuclei excepting that of the IV<unk>  supply<unk> s of the same side of the body.
Cranial nerve nucleus
Trigeminal nerve nuclei
Vestibular nuclei
Cochlear nuclei
Corticobulbar tract
Trigeminal motor nucleus
Basal ganglia
Optic chiasm