Neuro T#4 Lec 42.txt
Home > Preview
The flashcards below were created by user
on FreezingBlue Flashcards.
What deafness is located in the central auditory system?
What two complications are located in the peripheral auditory system?
- 1) Conductive deafness
- 2) Sensorineural deafness
Where is conductive deafness located?
Where is sensorineural deafness located?
What kind of damage causes conductive deafness?
- cerumen (ear wax) in external ear
- tympanic perforation
- otosclerosis (ossification)
Can a person still hear with conductive deafness?
Yes, due to intact bone that still vibrates
What causes sensorineural deafness?
- loud sounds
- head trauma
What is a vestibular schwannoma and where is it located?
- Neuroma causes by Oligodendrocytes and Schwann cells merging
- Occurs in the IAM
When placing a cochlear implant, what window should it pass: oval or round?
How do OHCs move when hyperpolarized and depolarized?
- Hyper: Extend
- Depolarized: shorten
What are otoacoustic emissions?
- Testing infant hearing
- Place microphone in EAM and measure movements of OHCs
What are the principal jobs of the OHCs and IHCs?
- OHCs: cochlear amplification
- IHCs: sensory receptors
What is the function of MSO olivocochlear efferents on OHCs?
Provide inhibition to dampen some IHCs and help with the cocktail effect
What would you like to do?
Home > Flashcards > Print Preview