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69 Cards in this Set

  • Front
  • Back
larynx
-biological valve at top of trachea
- closes off trachea to protect lungs
-builds air pressure below it to assist in lifting, coughing, child bearing
-houses vocal folds
adduct
-move toward middle
-close
abduct
-move away
-open
glottis
-area between v.folds
vocal folds
-layered structure
-epithelium
-thyroarytenoid
-lamina propria
false v.folds
-aka ventricular
- above true vf's
-used only for lifting/coughing
areyepiglotic folds
-above false vf's
-seperate pharynx nd laryngeal vestibule
laryngeal innervation
- vagus nerve x, primary nerve involved
- superior laryngeal nerve & recurrent laryngeal nerve branches of vagus
SLN
-internal branch gives sensory info to larynx
-external gives motor infor to cricothyroid muscle
RLN
- gives all motor innervation to interarytenoids, posterior cricoarytenoids, thyroids, and lateral cricoarytenoid muscles
-supplies all sensory infor below v.folds
hyoid bone
-larynx is suspended from it
-many extrinsic laryngeal muscles attached to it
epiglotis
-attached to hyoid
-protects trachea by closing inferiorly and posteriorly over laryngeal area
-directs liquids and food into esophagus
thyroid cartilidge
- largest cartilidge
-Adam's apple
- shields other laryngeal structures from damage
cricoid cartilidge
- 2nde largest
-uppermost tracheal ring
- completely surround trachea
-linked with arytenoids and thyroid
arytenoid cartilidges
- shaped like pyramids
-on cricoid cartilidge on either side of midline
corniculate cartilidges
- sit on apex of arytenoids
-small and cone shaped
-play a minor role in vocalization
cuneiform cartilidges
- tiny cone shaped
-under mucous membrane that covers aryepiglotic folds
-minor role of phonatary funtions of larynx
intrinsic laryngeal muscles
-control vocalization
-thyroarytenoids, cricothyroids, posterior cricoarytenoids (only abductors), lateral crico arytenoids, transverse arytenoids, oblique arytenoids
extrinsic laryngeal muscles
- all have 1 attachment to hyoid bone, and 1 out of larynx
-elevate or lower position of larynx in neck
-infrahyoids and suprahyoids
infrahyoids
-ex laryngeal muscles
- below hyoid, depress the larynx
-effect pitch
-TOSS, thyrohyoids, omohyoids, sternothyroids, sternohyoids
suprahyoid laryngeal muscles
-ex laryngeal muscles
- above hyoid
-elevate larynx
- digastrics, geniohyoids, mylohyoids, stylohyoids, genioglossus, hyoglossus
presbyphonia
-age related vocie disorder
fundamental frequency
-an idividuals typical pitch
-determined by mass, length, elasticity of vf's
jitter
-variations in vocal frequency
-seen in dysphonic patients
-measured by sustaining vowel
-people w/tremor or harseness may have a high jitter
shimmer
-cycle to cycle variation of itensity
-measured w/sustaine dvowel
-people w/roughness may have large amount of shimmer
voice quality
-hoarse (breathy & harsh, low)
-harsh (rough, unpleasant, vf's close too tightly)
-strain-strangled (effotful phonation, squeezing out sound)
-breathy (vf's open)
-Glottal Fry ( vf's vibrate slowly, low pitch, crackly)
-diplophonia (double voice)
-stridency (shrill, unpleasant, high pitched)
when can tx begin
-must have a medical evaluation of voice mechanism
- may need to refer to a neurologist
Indirect laryngoscopy
-mirror used to view laryngeal structures during phonation
direct laryngoscopy
-performed by a surgeon while patient is under
-goes through mouth into pharynx
-vocal function can't be observed, but will get direct view of larynx
-valuable when biopsy is required
flexible fiber-optic laryngoscopy
--thin flexible tube
-goes through nose, over the velum, and into position of above larynx
-patient can speak
endoscopy
-flexible(nose) or rigid (oral)
- can be attached to video camera (videoendoscopy)
-used to study laryngeal anatomy and physioloogy in detail including mucosal wave
sound spectography
- a graphic representation of a sound wave's intensity and frequency as a funtion of time
-quantitative analysis of speech
-used to measure improvements in voice
videostroboscopy
-helpful indifferentiating between functional and organic disorders
-strobe light, opticcal illusion of slow motion movementof vf's
electorglottography (EGG)
-measures vf closure patterns
-noninvasive
-surface electrodes placed on both sides of thyroid carilidge
electromyography (EMG)
-invasive
-measures laryngeal function, needle elctodes are inserted into laryngeal muscles
- useful when trying to dtermine vf pathology
aerodynamic measurements
-airflows, air volume, air pressures
-used to evaluate dysphonia, monitor voice changes and tx
-tidal volume(air inhaled/exhaled normal breath), vital capacity (air volume is exhaled after deep breath), total lung capacity (total air volume in lungs)
pitch measurements
-visipitch
perceptual voice eval
-subjective
-pitch, volume, resonance, repsiration, sustain phonation
-rating scales often used
hyponasality vs hypernasiality
-nasal resonance absent on nasal sounds

-too much nasal resonance on non-nasal sounds
phonation assessment
-MPT, sustain phonation
-s/z ratio
resonance disorders
-hypo/hypernasality
-assimilative nasiality
-cul-de-sac resonance
hypernasility
-most common resonance problem
-too much nasal sound
-caused by functional (Deaf) or organic (cleft palate) , velopharyngeal insufficiency
velopharyngeal insufficiency
- velopharyngeal mech is inadaquate to achieve closure
- nasal cavities are not sealed off for non nasal sounds
caused by decreased muscle mass of velum, adenoidectomy or tonsilectomy, paresis or paralysis of velum (CP, stroke, tbi, debiliatating diseases)
hyponasality
-lack of nasal resonance on nasal sounds
substitute b/m, d/n, g/ng
-temporary (colds), enlarged adenoids, mouth breathers
assimilative nasality
-when sound from a nasal consonant carries over to adjacent vowels

-functional or organic
cul-de-sac resonance
- tongue is carried too far back in oral cavity
-common in deaf, large adenoids/tonsils
functional vs organic resonace disorders
-O, must be treated medically b4 therapy (surgery, protheses)
tx of hypernsality
-biofeedback
-nasometer(visual feedback)
- mirror under nose, ear training, increase mouth opening, increase loudness, improve artic, change rate, decrease pitch
tx of hyponasality
- nasometer, biofeedback
-focusing, teaches to feel vibrations in mask
-nasal-glide stim
-visual aids, tissue, mirror
tumors
-supraglottic (above vf)
-glottic (at vf's)
-subglottic (below vf's)
-dr's classify tumors by T(site), N (involvement of lymph nodes), M (spread of cancer)
3 tx's for laryngeal cancer
- Laryngectomy ((partial or full)
- chemotherapy (alone or combined, used when tumor is large and spread is a risk)
-radiation therapy (alone or combined, used b4 surgery to trya nd elliminate cancer)
rehabilitation of larynbgectome
-team approach
-slp pre & post counsel
effects of laryngectome
- normal voicing impossible
-must breath through stoma
- sound can be produced with external devices, esophageal speech, & surgical modifications
esophageal speech
-taught to speak using esophagus using burps
-2 methods: injection method, inhalation method
injection method of esophageal speech
- patient impounds air in mouth, then pushes it back into esophagus, makes soft tissues of esophagus vibrate
inhalation method of esophageal speech
- patient inhales rapidly while keeping esophagus open and relaxed, ait moves through esophagus and sets tissues into vibration
surgical modifications for laryngectome
- Bloom-singer prostechtic device (TEP), small tube inserted to stop food from entering trachea
-patitnet bblocks stoma w?finger to build up air for speech
granuloma
-inflamed vascular lesion
-develop on vocal processes of arytenoids
-uni or bi
-caused by vocal abuse, intubation, injury, reflux
-breathy and hoarse, throat clearing,
-tx w/ surgery, voice therapy, or both
hemangioma
-similar to granulomas, but soft and filled w/blood
-intubation, reflux
- surgery and follow up voice therapy
leukoplakia
-benign thick whitish plaques
-caused: smoking, alcohol, vocal abuse
-prescancerous but should be monitored
-hoarse, low-pitch, breathy, soft
-tx: voice therapy, surgery
hyperkeratosis
-rough pink lesion, benign but may be precursors to malignancy
- smoking, reflux, vocal abuse
- hoarse/harsh, reduced volume, low pitch
-tx: elliminat irritants, surgery, voice therapy
papiloma
- primarily in children
- wart like growths, pink or white, found in airway
-horase, breathy, low pitch
-ariway obstriction life threatening concvern
- may need multiple surgeries, surgery can cause increased voice issues
laryngeal web
- membrane that grows across anterior portion of glottis
- can be congenital or acquired due to trauma
- infants have immediate surgery and tracheostomy
-tx adults surgery to remove web
paralysis of vf's
- occurs when nerve supply is cut off
-caused by surgery, neurological diseases, malignant diseases, intubation trauma, laryngeal trauma, stroke, vagus nerve deficits
-uni or bi
ankylosis
- sitffening of joints (arytenoids), caused by arthritis or cancer
-vf's dont close fully
spasmonic dysphonia
-psychologically based with neurogenic causes, brainstem dysfunction, occurs in adults
-abductor SD, breathy speech, tx botox, medication, speech therapy
-adductor SD, most common, strangled vocie, tx laser surgery, RLN resection, botox, voice therapy
nodules
- small nodes on vf's, red /pink then turn gray/white
- typically bilateral, junction of anterior and middle 1/3 portion of vf's
-develop over time dure to vocal abuse
-create low pitch, breathy or hoarseness
- tx: vocal rest, voice therapy, surgery
polyps
-softer than nodules, may be filled w/fluid
-typically unilateral
- sessile (broad based) or penduculated (stalk)
- can grow over time or suddenly
- breathjy and haorse, diplophonia
- tx: voice rest, voice therapy
tx for abuse based disorders
- voice therapy, meds, surgery, or combo