Unit 4 Hearing Anatomy Outer ear

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15 Terms

1
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<p>Pinna (auricle) landmarks</p>

Pinna (auricle) landmarks

helix, lobule, antihelix, antitragus, tragus concha

<p>helix, lobule, antihelix, antitragus, tragus concha</p>
2
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<p>major function of pinna (auricle)</p>

major function of pinna (auricle)

localization of a sound in space, collecting sound, most efficient at delivering high frequency sounds

<p>localization of a sound in space, collecting sound, most efficient at delivering high frequency sounds</p>
3
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<p>external auditory meatus outer border</p>

external auditory meatus outer border

concha

<p>concha</p>
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<p>external auditor meatus inner border</p>

external auditor meatus inner border

tympanic membrane

<p>tympanic membrane</p>
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<p>EAM is lined with</p>

EAM is lined with

epithelial tissue

glands produce cerumen

<p>epithelial tissue </p><p>glands produce cerumen</p>
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<p>outer 1/3 of EAM passes through?</p>

outer 1/3 of EAM passes through?

cartilage

<p>cartilage</p>
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<p>inner 2/3 of EAM passes through?</p>

inner 2/3 of EAM passes through?

tympanic portion of temporal bone

<p>tympanic portion of temporal bone</p>
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what is otitis extrema?

cerumen build up that causes infection in the ear

9
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osseocartliganous joint?

where the cartilage and bone portion come together in the EAM

10
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<p>tympanic membrane</p>

tympanic membrane

boundary between the outer and middle ear

<p>boundary between the outer and middle ear</p>
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<p>tympanic membrane is composed of three layers</p>

tympanic membrane is composed of three layers

external layer, intermediate layer, and inner (mucous) layer

<p>external layer, intermediate layer, and inner (mucous) layer</p>
12
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<p>umbo</p>

umbo

depressed part of cavity attached to middle ear (manubrium of malleus shows through)

<p>depressed part of cavity attached to middle ear (manubrium of malleus shows through)</p>
13
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<p>pars tensa and pars flaccida</p>

pars tensa and pars flaccida

pars tensa and pars flaccida

<p>pars tensa and pars flaccida</p>
14
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<p>anterior/posterior malleolar fold</p>

anterior/posterior malleolar fold

anterior/posterior malleolar fold

<p>anterior/posterior malleolar fold</p>
15
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<p>cone of light</p>

cone of light

cone of light

<p>cone of light</p>