Taste perception - Taste receptors
5 important questions on Taste perception - Taste receptors
Which 3 papillae exist, where they are located and how many taste buds they contain?
- Circumvallate --> back of the tongue --> thousands of taste buds
- Foliate --> posterior lateral edge --> hundreds of taste buds
- Fungiform --> anterior two-thirds of the tongue --> few taste buds
What is the site of interaction with tastants?
Which 2 views are there on how taste modalities are perceived by TCRs and how signals are transported through neurons?
- Labelled-lines model
- Across-fibre model
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What is the labelled-lines model?
What is the across-fibre model?
Sub-models
- Each TRC contains the receptors for each of the five basic taste modalities
- Each TRC registers one of the basic taste modalities, but the signals from TRCs detecting different taste modalities can be transported to the brain by the same neuron
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