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Anaphy Lab > Hearing and Balance > Flashcards

Hearing and Balance Flashcards

1
Q

ears are divided into 3 areas

what are those?

A

external ear
middle ear
inner ear

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2
Q

AKA Ear drums

A

tympanic membrane

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3
Q

functions both in hearing an in balance

A

Inner ear

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4
Q

1 inch long
1/4 inch wide
lines with ceruminous glands that secretes ear wax

A

external auditory canal

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5
Q

contains auricle
aka pina

collects sound waves and connect to the external auditory canal and to tympanic membrane

A

external ear

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6
Q

conducts sound waves in toward inner ear

hearing only

A

External ear

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7
Q

AKA typmanic cavity

air filled chamber within temporal lobe

A

middle ear

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8
Q

2 window in middle ear

A

oval window -cephalo

round window- caudal

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9
Q

AKA Pharyngotympanic tube

usually closed and flattened, but swallowing or yawning can open it briefly to equalize the pressure in the middle ear cavity with the atmospheric pressure

A

auditory tube

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10
Q

T or F

if the pressure is not the same with atmospheric pressure

the eardrum does not function or vibrate freely

A

TRUE

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11
Q

characterized by a

  • tugging of ears
  • fever
  • crying
  • trouble of sleeping
  • fluid draining from ear (luga)
  • trouble hearing
A

otitis media

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12
Q

3 auditory ossicles of middle ear

they are attached side by side

vibrations travels from one end to another causing the base of the stapes to send vibrations to the oval window

A

Malleus-hammer
Incus- anvil
Stapes-stirrup

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13
Q

if the child has sore throat

the eardrums bulges and inflammed

A

otitis media

if a baby has this, it is not recommended to feed then in a supine because it favors the entry of food into tube

put them into incline position

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14
Q

the bony labyrinth is filled with plasma-like fluid called

A

perilymph

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15
Q

suspended in the perilymph is a________

A

membranous labyrinth

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16
Q

contain fluid chamber medial to the inner ear

maze of bony chambers called OSSEOUS

A

INNER EAR

17
Q

3 components of inner ear

A

cochlea
vestibule
semicircular canal

18
Q

AKA organ of corti

A

cochlea

19
Q

labyrinth itself contains a thicker

A

endolymph

20
Q

sound is a result of vibration

A

True

21
Q

when referring to vibrations in the ear we call them?

A

sound waves

22
Q

waves are produces in perilymph pass through vestibular membrane and causes the vibrations of endolymph

A

TRUW

23
Q

head realtive to the gravity

up or down=keeps the head erect

functions happens in vestibule

receptors: maculae (have hair and microvilli emmbeded in the gelatonous mass called otolithic membrane

otholitic membrane have otoliths

A

static equilibrium

24
Q

angular/rotatory
movements of the head

functions happens in:
semicircular canals

receptors
crista ampullaris
(have hair cells with micro villi)

embeded also in gelatenous mas scupula

so when the head moves in an arc like position the endo lymph canal lags behind and then the cupula drags agains stationary endolymph

this stimulates the hair cells then transmit impulses to the vestibular nerve just like static equilibrium then the axons in vestibular portion of vestibular nerve projects to vestibular nucles and unto the cerebral cortext

A

dynamic equilibrium

25
Q

tiny skulls made up of calcium skulls that troll in response to gravity

so when otoliths move they pull the gell over the hair cells and densed the hair cells

it sends impulses to the vestibular nerve

A

otoliths

26
Q

ear contains semi circular canals arranged perpendicular to each other

A

t

27
Q

phanthom sound sensations, such as ringing in ear, common problem

A

tinnitus

28
Q

serious phatology of the inner ear
consider as the most common disease that involves dizziness from inner ear

it also have progressive deafness

cause is unknown

degeneration of cranial nerve 8

and increase pressure of inner ear fluids

vertigo, discomfort , hearing loss, tinnitus, and feeling of fullness in the affected ear

A

meniere disease

29
Q

as the person ages both the general and special senses are gradually declines

A

T

Anaphy Lab (11 decks)

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