Glossopharyngeal nerve
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Functions
- It receives general somatic sensory fibers from Tonsils, Pharynx, Middle ear and Posterior tongue
- It receives taste sensory fibers from the posterior tongue
- It receives visceral sensory fibers from the carotid bodies, carotid sinus.
- It supplies parasympathetic fibers to the parotid gland
- It supplies motor fibers to stylopharyngeus muscle
- It contributes to the pharyngeal plexus.
Clinic
- Damage: Loss of taste sensation to the posterior one third of the tongue, and impaired swallowing.
- Examination: Testing Gag reflex, Swallow, Cough, Speech