Lecture 18: Hearing Across The Lifespan

Question 1

outside of ear is called

Answer 1

Pina

Question 2

What does cochlea do?

Answer 2

cristals/hair in there
* vertigo happens if theres a problem here

Question 3

Ear is seperated into outer, middle, and inner ear and thats improtant because we need to figuoure out which area is messed up and this allows us to subdivide it

Question 4

where are the 3 small ear bones located?

Answer 4

middle ear (includes the timpanic membrane)

Question 5

Which part of ear determines where sounds come from?

Answer 5

Pinna

Note the hole in the ear is the external auditory meatus

Question 6

Answer 6

Question 7

what two main things is the inner ear responsible for?

Answer 7

Hearing/Balance

Question 8

Which 2 parts of the inner ear are used for hearing?

Answer 8

Cholear/fluid and hair cells inside

Question 9

Which 3 parts of the inner ear are sued for balance?

Answer 9

Semicircular canals, urticle, saccule

Question 10

can have a hearing problem anywhere along this path

Question 11

Problem transferring sound waves anywhere along pathways from outer ear, tympanic membrane, or middle ear

Answer 11

Conductive hearing loss
* just a problem transfering those sound waves along the way
* Something is blocking the ear
* Think fluid in ear from an ear infection

Question 12

Which kind of hearing loss:
* Causes in inner ear or sensory organs
* Vestibulochochlear nerve (CNVIII)
* Auditory nerve
* Brain auditory cortex-Temporal lobe

Answer 12

Sensorineural

can also be caused by brain injury or stroke

Question 13

NOTE: You can have conductive and sensioneurla hearing loss going on at the same time

Question 14

Normal age releated loss
* Unilateral or bilateral?
* Quick onset or gradual?
* Conductive or Sensiorineural

Answer 14

Presbycusis
* Bilatearl
* Gradual
* True sensiorineural

Question 15

By what are does 1/3 of the population have hearing loss?

Answer 15

by 65
* However, that means that 2/3 don’t. So dont run into the room yelling

Question 16

Is the inner ear affected by conductive hearing loss?

Answer 16

No

It impacts middle and or eternal ear

Intensity of signal is not affected

Tx: Increasing intensity of sound by speaking louder or mechanical amplification
* If it was sensriomotor and they cant process the sound it doesnt help at all

Question 17

Things that cause conductive hearing loss

Question 18

Things that cause sensorineural hearing loss

in resturants where there is too much noise impact here

Question 19

causes of sensorineural hearing loss

Question 20

Congenital hearing loss

Question 21

how much of hearing loss is geentic

Answer 21

> 50%

can be present at birth or develop later

Autosomal recessive

Autosomal dominant

X-linked

Mitochondrial inheritance patterns

Symptoms of genetic syndrome

Question 22

Question 23

does not lead to normal hearing (sounds like you’re kind of under the water)

Works best if you started to talk before lost hearing

Answer 23

Question 24

Question 25

NOTE: Infant is closer to a 180 degree angle, meaning its easier to clog up

Question 26

ear tubes
* lets fluid get out of that eauthian tube

Question 27

Question 28

Question 29