1D-GUStation Flashcards
How many chemicals are associated with taste?
4,000-10,000!!
What are the 5 taste qualities? What is an example of each?
Salty (NaCl), Sweet (Sucrose), Sour (Citric Acid), Bitter (QUININE hydrochloride), Umami (MSG)
What are the 4 locations of taste buds?
Tongue, Palate, Pharynx, Epiglottis
What type of papillae is mushroom like, is scattered over entire tongue surface, but is most abundant at its tip and along its anterior sides?
FungiForm
What 2 tastes do fungiform papillae USUALLY respond to? What is the tertiary taste?
Sweet & Salty….also sour
What type of papilla are folded structures, is most abundant on the middle edges of the tongue, and mainly respond to SOUR?
Foliate Papillae
What CN AND BRANCH of that CN innvervates the anterior 2/3 of the tongue?
VII, Chorda Tympani
What papilla is the largest and least numerous and mostly responds to BITTER?
CircumVallate
Which papillae does CN IX innervate?
Circumvallate and foliate (post 1/3 of tongue)
Which CN innvervates the taste buds on the epiglottis?
CN X-VAGUS!
Which CN innervates the taste buds on the palate?
CN VII-FACIAL
Taste stimuli are spread relatively _______ across the tongue.
equally
What are the three types of cells in a taste bud?
1.Taste Receptor Cells (TRC) 2.Basal cells 3.Supporting cells
The opening to the taste bud (_______) allows chemical cues to enter the bud and come in contact with receptors located on the ______ of taste cells.
taste pore…..microvilli
Taste receptor cells are technically NOT ______. Instead, taste receptor cells synapse onto afferent nerve endings of CNs ___, ___ and ___.
neurons…VII,IX, and X
