Taste Flashcards
what is retronasal flow
brings olfactory molecules from mouth to nasal cavity
what is retronasal olfaction
in combination with taste is responsible for flavour
what is orthonasal olfaction
smells coming from front
what is retronasal ofaction
smells coming from mouth behind the palate
what happens if cranial nerves are damaged
flavour is not perceived
what are 5 basic tastes and examples
sweet-glucose,fructose sour-proteins,found inacids salt-sodium bitter-poisons unami-protein-amino acids-glutamate
what do taste buds do
create neural signals conveyed to brain by taste nerves- cranial
what are pipillae
taste buds embedded in here
how are sweet and bitter tastes sensed
by g protein coupled proteins
how are salt and sour sensed
pass directly through ion channe;s
what is the order of taste signals to brain
nerve fibres on taste buds
various nerved carry to brain stemthen to thalamus
primary taste cortex
orbitofrontal cortex
what is labelled lines
theory of taste coding in which each taste fibre carries a particular taste quality
what are two things that happen if labelled lines are true
we can measure neural responses in primates and predict pattern in humans
human sensation campared to predictions
why are labelled lines importatn
pattern or synthesis mechanism would make identifying bahviourally useful taste information difficult to detect
where are glutamate receptors
in mouth and gut
