Chapter 12 Part 2 Flashcards
5 taste sensations
Sweet Sour Salty Bitter Umami
Sweet
Sugars, saccharin, alcohol, and some amino acids
Sour
Hydrogen ions
Salty
Metal ions
Bitter
Mainly alkaloids such as quinine and nicotine
Umami
A meaty taste caused by amino acids glutamate and aspartame
Another word for smell
Olfaction
Another word for taste
Gustation
Types of cells in the roof of the nose
Receptor cells
Supporting cells
Basal cells
Substances that we smell
Odorants
Where are most of the receptors for taste?
On the anterior 2/3 of the tongue
3 kinds of papillae that carry taste buds
Fungiform
Foliate
Vallate
3 parts of the ear
Outer or external ear
Middle ear
Inner or internal ear
Taste bud
A flask-shaped structure with receptor cells
What is the middle ear also called?
Tympanic cavity
Tympanic cavity
small, air-filled, mucosa-lined cavity in the temporal bone
Function of inner ear
Hearing and balance
Three parts of the bony labyrinth
Cochlea, vestibule, semicircular canals
where are basal cells located on the basal epithelium?
at the base of the epithelium
where are the supporting cells on the basal epithelium?
surround and cushion the receptor cells
function of olfactory glands
produce fluid that helps dissolve the odorants plus watch them away so the olfactory cilia are ready for the next odorant
Ear crystals
Also called otoliths
CaCO stones
Don’t do anything
What do changes of the position of the head do to the inner ear?
Leads to movement of the otolithic membrane
Which receptor do ototholiths activate?
Maculae
what part of the ear is involved with both hearing and balance?
the inner ear (labyrinth)
two muscles that make sure the tension on the eardrum is adjusted to the sound pressure
tensor tympani and stapedius
3 parts of the external ear
Pinna
external acoustic meatus
Tympanic membrane
another word for the external acoustic meatus
auditory canal
another word for the tympanic membrane
eardrum