Neuro T#4 Lec 42.txt

Card Set Information

Author:
kepling
ID:
81792
Filename:
Neuro T#4 Lec 42.txt
Updated:
2011-04-25 20:29:01
Tags:
Neuro Lec
Folders:

Description:
Neuro T#4 Lec 42
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user kepling on FreezingBlue Flashcards. What would you like to do?


  1. What deafness is located in the central auditory system?
    Central deafness
  2. What two complications are located in the peripheral auditory system?
    • 1) Conductive deafness
    • 2) Sensorineural deafness
  3. Where is conductive deafness located?
    External/middle ear
  4. Where is sensorineural deafness located?
    Inner ear
  5. What kind of damage causes conductive deafness?
    • cerumen (ear wax) in external ear
    • otitis
    • tympanic perforation
    • otosclerosis (ossification)
  6. Can a person still hear with conductive deafness?
    Yes, due to intact bone that still vibrates
  7. What causes sensorineural deafness?
    • loud sounds
    • meningitis
    • drugs
    • head trauma
  8. What is a vestibular schwannoma and where is it located?
    • Neuroma causes by Oligodendrocytes and Schwann cells merging
    • Occurs in the IAM
  9. When placing a cochlear implant, what window should it pass: oval or round?
    Round window
  10. How do OHCs move when hyperpolarized and depolarized?
    • Hyper: Extend
    • Depolarized: shorten
  11. What are otoacoustic emissions?
    • Testing infant hearing
    • Place microphone in EAM and measure movements of OHCs
  12. What are the principal jobs of the OHCs and IHCs?
    • OHCs: cochlear amplification
    • IHCs: sensory receptors
  13. 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