Trigeminal nucleus This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Trigeminal_nucleus".
The sensory trigeminal nerve nucleus is the largest of the cranial nerve nuclei, and extends through the whole of the brainstem, midbrain to medulla.
The nucleus is divided into three parts, from rostral to caudal (top to bottom in humans):
The spinal trigeminal nucleus is further subdivided into three parts, from rostral to caudal:
There is also a distinct trigeminal motor nucleus that is medial to the chief sensory nucleus.
Dissection of brain-stem. Lateral view.
Deep dissection of brain-stem. Lateral view.
Nuclei of origin of cranial motor nerves schematically represented; lateral view.
Primary terminal nuclei of the afferent (sensory) cranial nerves schematically represented; lateral view.
Trigeminal lemniscus (Dorsal trigeminal tract, Ventral trigeminal tract)
cranial nuclei: GSA: Principal V/Spinal V - VIII-c (Dorsal, Anterior)/VIII-v (Lateral, Superior, Medial, Inferior) - SVE: Motor V - VII - GSE: VI - GVE: VII: Superior salivary nucleus
MLF, III, IV and VI (vestibulo-oculomotor fibers, medial vestibulospinal tract)
sensory/ascending: Trapezoid body/VIII - Superior olivary nucleus
Inferior cerebellar peduncle (Vestibulocerebellar tract)
cranial nuclei: GVA: VII,IX,X: Solitary/tract • SVA: Gustatory nucleus • GSE: XII • GVE: IX,X,XI: Ambiguus • SVE: X: Dorsal • IX: Inferior salivatory nucleus - MLF, III, IV and VI
sensory/ascending: Gracile nucleus • Cuneate nucleus (Accessory cuneate nucleus) • Sensory decussation • Medial lemniscus
