Please enable JavaScript.
Coggle requires JavaScript to display documents.
The Gustatory System (Taste) - Coggle Diagram
The Gustatory System (Taste)
Tasting Organ
taste buds on tongue
structures within taste buds:
gustatory afferent neurons
taste cells
synapses
Relay of Gustatory Info to Brain
info from left cranial nerves
left gustatory nucleus
left
ventral posterior medial thalamic nucleus
axons in brainstem synapse info that gets projected into thalamus to
primary gustatory cortex
5 tastes
Salty (Na+)
Na+ enters cell via passive channels
cell depolarizes
maintains osmotic balance and neuron function
Ca2+ channels open
triggers serotonin release
Sour (acid)
H+ closes K+ channels, lowers K+ conductance
loss of resting state, cell depolarizes
H+ enters via passive channels
Ca2+ channels open
maintains pH balance
triggers serotonin release
Sweet (monosaccharides)
Bitter (potential poisons)
phospholipase C breaks PIP2 into IP3
IP3 triggers release of Ca2+
activated GPCR activates phospholipase C
cell depolarizes
2 part GPCR detects ligand
Na+ channels open
triggers ATP release
Umami (glutamate)
