Lab 4- Olfaction and Taste, and Hearing and Equilibrium Flashcards
Tongue
- Circumvallate papillae
- Fungiform papillae
- Filiform papillae
- Foliate papillae
How many taste buds are on a circumvallate papillae?
100 per papilla
How many taste buds are on a fungiform papilla?
5 per papilla
What is the function of the filiform papillae?
Texture, friction, light touch.
What are the 5 tastes?
- sweet
- sour
- salty
- bitter
- umami
What conclusion did you draw from the olfactory adaptation taste?
the more volatile the longer it takes for sensory adaptation.
Why can’t you taste with a dry tongue?
Chemoreceptors have to be dissolved in saliva.
for smell they have to be dissolved in mucous
which ossicle strikes the oval window?
The Stapes
Where does the auditory tube lead?
Nasopharynx
Which area contains perilymph?
Bony labyrinth
Which are contains endolymph?
Membranous labyrinth
What is conductive hearing loss?
outer or middle ear
EX: ear infection
What is sensorineural hearing loss?
cochlea all the way to temporal lobe.
EX: cochlear implant
What does the Weber test evaluate?
hearing loss
Describe how to interpret the weber test.
both ears are equal you’re normal, lateralization towards an ear means you have hearing loss.
What does the Rinne test evaluate?
Type of deafness
Describe how to interpret the Rinne test.
Hear vibration in-front of ear you’re normal
If a weber test sounds louder in left ear, what are the two possible causes?
- conductive deafness
- sensorineural deafness
If the Rinne is negative (cannot hear the vibration infront of the ear) on the left ear, and positive (can hear vibration in front of ear) in the right ear, and the above Weber results are true, what is the diagnosis?
Conductive hearing loss in left ear
If the above Weber reults are true and the Rinne is positive in left ear and sounds softer in right ear either with tuning fork on the right mastoid, or when held up to the right ear, what is the diagnosis?
Sensorineural hearing loss in right ear
Nystagmus
Pupils keep moving back and forth when dizzy
What does the Barany’s test evaluate?
semi-circular canal’s; if the fluid (endolymph) is still moving.
What does the Romberg test evaluate?
Balance; sense of gravity.
