Nerve
Glossopharyngeal nerve (CN IX)
Posterior tongue, pharynx, parotid
High-yield
Afferent limb of the gag reflex; taste and sensation to the posterior one-third of the tongue; carotid sinus/body baroreceptor and chemoreceptor input.
Overview
The ninth cranial nerve, supplying the stylopharyngeus, taste and sensation to the posterior tongue and pharynx, and parasympathetics to the parotid gland.
Reference facts
- Roots
Motor, sensory, and parasympathetic (cranial nerve)
- Course
Exits the skull through the jugular foramen with CN X and XI
- Motor
Stylopharyngeus muscle
- Sensory
Taste and general sensation of the posterior third of the tongue and oropharynx; carotid sinus/body; parasympathetic to the parotid gland (via the otic ganglion)