auditory system

Question 1

what nerve is associated with the auditory pathway ?

Answer 1

cochlear nerve - CN 8

Question 2

if there is a brainstem lesion associated with hearing loss where is it most likley located ?

Answer 2

in the cerebellopontine angle

Question 3

what are the two types of hearing loss ?

Answer 3

conductive the sound waves dont convert to nerve signals
and sensorinureal 7aga gowa 5ales

Question 4

what is presbycussis ?

Answer 4

age related hearing loss
due to degeneration of the organ of corti
results in sensorinureal hearing loss

Question 5

what is webers test ?

Answer 5

a tuning fork is used and out on the forehead , normal response is to hear the sound on both ears
if its louder in the bad ear -conductive hearing loss
if it is louder in the good ear - that is sensorineural hearing loss

Question 6

how is a rinne test conducted ?

Answer 6

tuning fork placed behind the ear on the mastoid bone
wait until the patient cam no longer hear the vibrations , then move the fork out into the air

Question 7

what are the different results associated with rinne test ?

Answer 7

we see the difference between air and bone conduction
normall air conduction should be better than bone conduction
in conductive HL - the bone conduction is better
in SNHL - the air conduction is better

Question 8

what are the two types of noise induced hearing loss ?

Answer 8

1- abrupt sudden loss of hearing after loud noise stereociliated cells of organ of corti

2- long term noise exposure - associated with loss of hearing high frequency noises first