principal sensory trigeminal nucleus

(redirected from Principal sensory nucleus)
Also found in: Wikipedia.

principal sensory trigeminal nucleus

The most rostral nucleus of the general somatic sensory column, a long collection of sensory nuclei that extends through the entire hindbrain as a continuation of the dorsal horn nuclei of the spinal cord. The principal sensory trigeminal nucleus receives axons from the trigeminal nerve (CN V) carrying touch, two-point discrimination, and pressure signals from the face and mouth. Like the spinal trigeminal nucleus, the principal sensory trigeminal nucleus sends axons to the ventral posterior nucleus of the thalamus via the medial lemniscus and the spinothalamic tract. In addition, the principal sensory trigeminal nucleus sends axons to the ventral posterior nucleus in a separate tract called the dorsal trigeminal tract.
See also: nucleus
Full browser ?