(anatomy) The gel-like centre of an intervertebral disc.

(neuroanatomy) a nucleus within each hemisphere of the brain, sitting astride the thalamus and located near the center of the brain.

One of the cerebellar nuclei, lying immediately to the medial side of the nucleus dentatus, and partly covering its hilus.

A mass of grey matter between the fastigatum and the embolus in the cerebellum.

Either of two pairs of structures situated on the lower surface of the thalamus that relay sensory impulses to the cortex, the lateral geniculate nucleus, which relays visual impulses, and the medial geniculate nucleus, which relays auditory impulses.

(neuroanatomy) Any of four nuclei in the medulla oblongata on each side of the floor of the fourth ventricle of the brain in which fibers of the vestibular nerve terminate.

(physics) An atomic nucleus comprising three bound components in which any subsystem of two components is unbound.

A group of large motor neurons situated deep in the medullary reticular formation. It contains the cell bodies of nerves that innervate the muscles of the soft palate, pharynx, and larynx.

Synonym of red nucleus

The nucleus of the thalamus involved in the sense of audition, which receives projections from the inferior colliculus and projects to the primary auditory cortex.