Chief sensory nucleus of trigeminal nerve

Target:

• CN5 ⇒ Skin & deep tissues of the head, dura mater

• CN9 ⇒ Cutaneous area behind ear (tactile)

• CN10 ⇒ Sensation from pinna, external acoustic meatus, tympanic membrane

“Chief sensory nucleus of trigeminal nerve lies in the dorsolateral region of the tegmentum of the upper part of the pons lateral to the motor nucleus (of trigeminal) and occupies an intermediate position between the mesencephalic nucleus above and the spinal nucleus below (Fig. 9.4). It is concerned only with the tactile sensibility