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4190 MIDTERM
Lecture 2 Management of HL
37
Audiology
Undergraduate 4
03/05/2012

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Cards

Term
Primary Goal of Assiting Individuals with HL
Definition
Max the ability to hear &understand speech
Term
2 Categories of HL
Definition
1. Medically Treatable and Reversible
2. Permanent - reduces ability to communicate
Term
Law:
IDEA
Definition
Individual and Disabilities Education Act
Term
Law:
ADA 1990
Definition
Americans with Disabilities Act
About giving everybody access
Term
No Child Left Behind 2001
Definition
Allocating $ and services for kids in public schools
Term
INCIDENCE OF HL
Definition
31.5 million Americans
Term
Middle Ear Muscles
Definition
Stapedius
Tensor Tympani
Term
Smallest Muscle in Body
Definition
Stapedius
Term
Connects to upper part of manubrium and parallels Eustacchian Tube
Definition
Tensor Tympani
Term
Eustachian Tube
Definition
Normally closed
middle ear tissues absorb air
Term
DEVELOPMENT OF MIDDLE EAR:
2 mo
Definition
TM begin formation
Term
DEVELOPMENT OF MIDDLE EAR:
3 mo
Definition
annulus TM forms
Term
DEVELOPMENT OF MIDDLE EAR:
12 week:
Definition
ossicles differentiate
Term
DEVELOPMENT OF MIDDLE EAR:
16 weeks
Definition
ossicles fully formed
Term
sum of all energy that opposes the transmission of sound
Definition
Impedance
Term
if impedance of 2 mediums (air & fluid) are ____, the sound will not easily transmit from 1 to another
Definition
UNEQUAL
Term
AS SOUND TRAVELS IN AIR...
Definition
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
Term
3 Anatomical Planes
Definition
1. Frontal/Coronal
2. Sagittal
3. Transverse/Horizontal
Term
EXTERNAL AUDITORY CANAL
Definition
lined with cerumenous glands
curved
approx. 1 inch long in adults
Term
What is the first thing in a hearing test?
Definition
LOOK INTO someone's ear, examine the physical appearance of ear
Term
Outer ___ portion of EAC contains ____
Definition
Outers 1/3 portion of EAC contains HAIR FOLLICLES
Term
Inner ____ portion of EAC _____
Definition
Inner 2/3 of EAC passes through temporal bone
Term
3 Functions of Outer Ear
Definition
1. Pinna and EAC serve as RESONATOR
2. Aid in Sound Localization
3. Protective Mechanism
Term
Embryology
Definition
development of fetus in weeks
40 weeks
Term
at 28 days after conception
Definition
bulges being to appear on either side of tissue that will devlop into head & neck
Term
4th week
Definition
Meatus (opening to EAC) begins forming
Term
2nd month
Definition
auricle/pinna begins around
Term
28th week
Definition
Tube (eventually EAC) forms
Term
MIDDLE EAR
____ limit is tympanic membrane
Medial Wall Containg ____
___ considered Midde ear
____ filled in Middle Ear
lined with _____
Definition
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
Term
____ is the Border between Outer & Middle Ear
Definition
TYMPANIC MEMBRANE
Term
TM notes
Definition
-thin, concave
rich in blood supply (red with infection)
Held in place in EAC by Annulus
3 layers
2 windows
Term
ANNULUS
Definition
tissue that hold TM in EAC
Term
PARS TENSA
Definition
greatest surface tends to be tense
Term
PARS FLACCIDA
Definition
smaller, looser area
Term
3 Layers of TM
Definition
OUTER - same skin as EAC
MIDDLE - tought, fibrous, connective tissue
INNER - muscous membrane ME
Term
2 WINDOWS OF TM
Definition
OVAL: base of stapes
ROUND: below oval
Term
OSSICULAR CHAIN
3 parts
Definition
Malleus Incus Stapes
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