Ear

Question 1

3 parts of the ear

Answer 1

• external
• middle
• inner

Question 2

the external ear opening in which sound waves are funneled into is called the?

Answer 2

external auditory canal

Question 3

The external auditory canal is lined with glands that secrete cerumen. what is cerumen

Answer 3

cerumen is a yellow/coloured waxy substance that protects and lubricate the ear

Question 4

the two major types of cerumen?

Answer 4

• dry cerumen (flaky and grey-ish)
• wet cerumen (moist, honey brown to dark brown)

Question 5

what seperates the external and middle ear?

Answer 5

tympanic membrane

Question 6

the small superior portion of the tympanic membrane is called? while its larger thicker is called?

Answer 6

• pars flaccida
• pars tensa

Question 7

the 3 tiny bones and auditory ossicles in the middle ear

Answer 7

• malleus
• stapes
• incus

Question 8

what is the opening that connects the middle ear with the nasapharynx and allow for passage of ear

Answer 8

Eustachian tube

Question 9

the inner ear is embedded in the bone and conatains labyrinth that holds the sensory organ for equilibrium and hearing. true or false?

Answer 9

TRUE

Question 10

the inner ear is assesible for direct examination. true or false?

Answer 10

false. inner ear is not assesible for direct examination.

Question 11

the functtin of earing involves the 3 levels at the auditory system called…?

Answer 11

1. peripheral: the ear transmit sound and converts its vibration to electrical impulse which is then analyzed by the brain.
2. brain stem: is a binaural interaction that helps a person locate the direction of the sound as well as identify the sound
3. cerebral cortex: has the function of interpreting the sound and beginning appropriate response

Question 12

types of hearing loss

Answer 12

• conductive hearing loss : is a partial loss as the person can still hear the increase in amplitude. involves a mechanical dysfunction the outer or middle ear.Conductive hearing loss is caused by fixation of the stapes
• sensorineural hearing loss : is a gradual nerve degeneration that occurs with aging = (presbycusis)
• mixed hearing loss: combination of both type on the same ear.

Question 13

is the normal pathway of hearing, air or bone conduction?

Answer 13

the normal pathway is air conduction.
bone conduction is an alternative route in which the bone of the skull vibrate and these vibrations are transmitted directly to the inner ear and to cranial nerve VIII

Question 14

the gradual nerve degeneration in young adult

Answer 14

otosclerosis

Question 15

a middle ear infection that results in the obstruction of the Eustachian tube

Answer 15

otitis media

Question 16

the infant Eustachian tube are more posterior and horizontal. true or false

Answer 16

true

Question 17

in older adult, what causes decrease in hearing?

Answer 17

its the cilia lining becoming caorse and stiff therfore impeding the sound waves travelling toward the eardrum.

Question 18

what is vertiligo and its types

Answer 18

Vertiligo is the sensation of rotational spinning which occurs in the dysfunction of the labyrinth
- objective: people feel as if the room is spinning
- subjective: it feels as if they are the ones spinning

Question 19

The normal eardrum is shiny and translucent, with pearly grey coloration.
true or false?

Answer 19

TRUE

Question 20

Explain the whisper test assessment

Answer 20

• This is done by placing one finger on the tragus and pushing it in and out of the auditory meatus.
• Move your head to about half a meter from the person ear, exhale fully and whisper slowly a set of three random numbers and letters and ask the sequence to be repeated