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Primary Goal of Assiting Individuals with HL |
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Max the ability to hear &understand speech |
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1. Medically Treatable and Reversible 2. Permanent - reduces ability to communicate |
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Individual and Disabilities Education Act |
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Americans with Disabilities Act About giving everybody access |
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No Child Left Behind 2001 |
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Allocating $ and services for kids in public schools |
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Connects to upper part of manubrium and parallels Eustacchian Tube |
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Normally closed middle ear tissues absorb air |
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DEVELOPMENT OF MIDDLE EAR: 2 mo |
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DEVELOPMENT OF MIDDLE EAR: 3 mo |
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DEVELOPMENT OF MIDDLE EAR: 12 week: |
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DEVELOPMENT OF MIDDLE EAR: 16 weeks |
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sum of all energy that opposes the transmission of sound |
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if impedance of 2 mediums (air & fluid) are ____, the sound will not easily transmit from 1 to another |
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AS SOUND TRAVELS IN AIR... |
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1. external Ear Funnels the Waves into the Middle Ear 2. Energy from Middle Ear (air filled) moves from air into the fluid filled caivty of Inner Ear 3. Inner Ear Converts Mechanical E to Electrical E (TRANSDUCTION) 4.analyzed by centers in brain |
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1. Frontal/Coronal 2. Sagittal 3. Transverse/Horizontal |
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lined with cerumenous glands curved approx. 1 inch long in adults |
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What is the first thing in a hearing test? |
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LOOK INTO someone's ear, examine the physical appearance of ear |
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Outer ___ portion of EAC contains ____ |
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Outers 1/3 portion of EAC contains HAIR FOLLICLES |
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Inner ____ portion of EAC _____ |
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Inner 2/3 of EAC passes through temporal bone |
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1. Pinna and EAC serve as RESONATOR 2. Aid in Sound Localization 3. Protective Mechanism |
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development of fetus in weeks 40 weeks |
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at 28 days after conception |
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bulges being to appear on either side of tissue that will devlop into head & neck |
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Meatus (opening to EAC) begins forming |
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auricle/pinna begins around |
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Tube (eventually EAC) forms |
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MIDDLE EAR ____ limit is tympanic membrane Medial Wall Containg ____ ___ considered Midde ear ____ filled in Middle Ear lined with _____ |
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MIDDLE EAR LATERAL limit is tympanic membrane Medial Wall Containg OVAL & ROUND WINDOWS TM considered Midde ear AIR filled in Middle Ear lined with MUSCOUS MEMBRANE (absorbs the air |
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____ is the Border between Outer & Middle Ear |
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-thin, concave rich in blood supply (red with infection) Held in place in EAC by Annulus 3 layers 2 windows |
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tissue that hold TM in EAC |
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greatest surface tends to be tense |
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OUTER - same skin as EAC MIDDLE - tought, fibrous, connective tissue INNER - muscous membrane ME |
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OVAL: base of stapes ROUND: below oval |
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