Ch 16 Gustation Flashcards
1
Q
4 lingual papillae
A
filiform, fungiform, vallate, foliate
2
Q
Filiform structure
A
no taste buds, anterior 2/3 of tongue
3
Q
Fungiform structure
A
has taste buds, tips and sides
4
Q
Vallate structure
A
has taste buds, inverted V posterior
5
Q
Foliate structure
A
has taste buds, lateral margins
6
Q
Gustation pathway
A
- dissolved chemicals contact taste hairs through taste pores
- connects to cranial nerve
- depolarized membrane of gustatory epithelial cells
- neurotransmitter release
- action potential to central nervous system (1st order to medulla, 2nd order to thalamus , 3rd order to cerebral cortex)
7
Q
Cells within taste buds
A
taste cells (epithelial cells), basal cells, supporting cells
8
Q
5 primary taste sensation
A
salty, sweet, umami, sour, bitter
9
Q
Brain regions involved with taste
A
medulla, hypothalamus, amygdala, thalamus
10
Q
Cranial nerves involved with taste
A
facial VII, glossopharyngeal IX, and vagus X
