Gustatory (Taste) Pathway
receptors are gustatory cells of taste buds
Distributed on the tongue, the epiglottis
- From the anterior two thirds,
nerve fibres join the chorda tympani.
- From the posterior one third,
they join the glossopharyngeal nerve.
- The fibres from the extreme pharyngeal
part as well as the epiglottis
join the vagus nerve (Some fibres e.g.
from the palate may be in the trigeminal nerve).
|Secondary gustatory projections
- The primary order neurons terminate in the gustatory nucleus
- Secondary fibre systems arising from the gustatory nucleus project to ventral posteromedial nucleus of the thalamus .
- Others project to :
Dorsal motor nucleus of vagus nerve
Phrenic nerve nucleus
Anterior horn cells of thoracic spinal segments
f) Pontine taste area
- Third order neurons projects to both the insular and parietal opercular cortex.
- Cell bodies are located in geniculate, inferior glossopharyngeal and vagal ganglia