Gustatory And Olfactory System - 4/7 Cole Flashcards
Which lingual papillae have taste buds?
Fungiform (mushroom-shaped)
Circumvallate (100s of taste buds)
Foliate (leaf-shaped)
Geographic tongue is what?
What papillae atrophies?
Oral manifestation of psoriasis
Filiform papillae
What kind of tissue is fungi form papillae?
Taste buds?
SSNK
5 taste buds along apical surface
What do serous glands secrete in the papillae that have taste buds?
Lingual lipase and VEGP
What is distinctive about foliate papillae?
Parallel rows
Taste buds in lateral walls
What are the 3 taste bud components?
Taste receptor cell
Supporting (immature) cell
Precursor (basal) cell
What are ovoid chemoreceptors?
Found where?
Taste buds sensitive to bad tasting food
Soft palate, posterior pharynx, epiglottis
In the mechanism of taste, what triggers the release of neurotransmitters at the afferent synapse?
Increase in intracellular Ca2+
What type of taste sensation does CN 9 carry?
CN 7?
Sweet and bitter
All 5
Where is the sweet taste located?
Salty?
Tip of tongue
Posterior and lateral to tip
Where is sour taste located on the tongue?
Bitter?
Anterior 2/3 of dorsum and along the lateral margin (measures acid)
Posterior 1/3 of tongue
Kohlrabi contains what?
Inhibits what?
Glucosinolates
Iodine uptake by thyroid
Umami is linked to what receptor?
L-glutamate
Taste buds on the palate register what?
Primarily bitter and sour
What is associated with fat receptor?
CD36
What epithelium is the nasal cavity lined by?
Pseudostratified columnar
The lamina propria of the nasal cavity contains what?
Serous and mucous glands
Mast and plasma cells
Extensive vascular plexus
What Igs are in the plasma cells of the nasal cavity lamina propria?
A, G, E
What are the fx of the nasal mucosa?
Air hydration
Air filtration
Temperature regulation
What type of epithelium is the olfactory epithelium?
What 3 cell types?
Pseudostratified columnar
Olfactory, supporting (sustentacular), and basal cells
What are the fila olfactory associated with?
Olfactory cells (receptor cells)
What type of cells are the supporting cells?
What pigment do they contain?
Fxs?
Columnar with oval nuclei
Light yellow
Physical support, nourishment, electrical insulation
What is the life span of an olfactory cell?
30-60 days
Axons of mitral cells form what?
Olfactory tract
Glands of Bowman secrete serous fluid containing what?
What protective substances do they contain?
OBP
Lysozyme and IgA
Kallman syndrome is characterized by what?
Lack what hormone?
What is the defective gene? Codes for what?
Anosmia, small genitals, sterile
GnRH
KAL-1 coding for anosmin 1
What kind of epithelium is the tongue?
SSNK
Stratified squamous non-keratinized
