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HISTO Block 4 > Special Senses Ear > Flashcards

Special Senses Ear Flashcards

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1
Q

the ear is what part of the temporal bone

A

the petrosal part

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2
Q

tensor tympani is suppleid by what

A

V3

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3
Q

stapedius is supplied by

A

CN VII

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4
Q

what are the thigns that the typanic membrane coems from

A

ectoderm, mesoderm, and endoderm

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5
Q

autitis externa how can you tell

A

pull on ear and baby will scream

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6
Q

what 3 things are in the middle ear

A
  1. ossicles
  2. muscles ( 2)
  3. oval window and round window
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7
Q

the oval window is near what? the round window is near what

A

stapes

cohclea

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8
Q

what are the two labirinths in the internal ear

A

bony and membranous

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9
Q

what is the series of spaces inside the petrous part of the temporal bone

A

bony labyrinth

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10
Q

extracellular fluid

A

perilymph

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11
Q

intracellular fluid?

A

endolymph

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12
Q

wat 3 things make up the bony lab

A

vetibule
semicrcular canal
cochlea

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13
Q

how many times does the cochlea wind around the modiolous

A

2 and 1/2 turms

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14
Q

the scala vestibuli and tympani are part of the

A

bony lab

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15
Q

what does sprial organ sit on

A

basilar membrane

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16
Q

what seperates the media and vestibuli

A

reissner (vestibula membrane)

17
Q

what extends laterally from the modiolus and is a thin bony ridge

A

osseus spiral lamina

18
Q

what is the opening that the vestibuli and the tympani communicate through

A

helicotrema

19
Q

what is the apex of the cochlea

A

helicotrema

20
Q

what secrets endolymph

A

stria vascularis

21
Q

where are stereocilia

A

on the hair cells

22
Q

what are the cells that occupy the space between the inner and outer hair cells

A

pillar cells

23
Q

bipolar cells are where

A

spiral ganglion

24
Q

oval window sets up sound waves in what

A

cochlea

25
Q

the basilar membrane is more what then the tectorial membrane

A

elastic

26
Q

what is the moving in one direction

A

linear acceleration

27
Q

what is it when you are moving in an angle like flying

A

angular acceleration

28
Q

semicircular canal helps in what movement

A

angular accelaration

29
Q

what respond to linear acceleration

A

saccule/utricle

30
Q

what are the three parts of the saccule/utricle

A

macula
neuroepithelial (hair) cells

otoliths

31
Q

what are the three parts of the semicircular ducts

A

cristae ampullares

neuroepithelial hair cells

cupula

HISTO Block 4 (9 decks)

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