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69 Cards in this Set
- Front
- Back
larynx
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-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 |
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adduct
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-move toward middle
-close |
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abduct
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-move away
-open |
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glottis
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-area between v.folds
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vocal folds
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-layered structure
-epithelium -thyroarytenoid -lamina propria |
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false v.folds
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-aka ventricular
- above true vf's -used only for lifting/coughing |
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areyepiglotic folds
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-above false vf's
-seperate pharynx nd laryngeal vestibule |
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laryngeal innervation
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- vagus nerve x, primary nerve involved
- superior laryngeal nerve & recurrent laryngeal nerve branches of vagus |
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SLN
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-internal branch gives sensory info to larynx
-external gives motor infor to cricothyroid muscle |
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RLN
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- gives all motor innervation to interarytenoids, posterior cricoarytenoids, thyroids, and lateral cricoarytenoid muscles
-supplies all sensory infor below v.folds |
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hyoid bone
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-larynx is suspended from it
-many extrinsic laryngeal muscles attached to it |
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epiglotis
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-attached to hyoid
-protects trachea by closing inferiorly and posteriorly over laryngeal area -directs liquids and food into esophagus |
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thyroid cartilidge
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- largest cartilidge
-Adam's apple - shields other laryngeal structures from damage |
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cricoid cartilidge
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- 2nde largest
-uppermost tracheal ring - completely surround trachea -linked with arytenoids and thyroid |
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arytenoid cartilidges
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- shaped like pyramids
-on cricoid cartilidge on either side of midline |
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corniculate cartilidges
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- sit on apex of arytenoids
-small and cone shaped -play a minor role in vocalization |
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cuneiform cartilidges
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- tiny cone shaped
-under mucous membrane that covers aryepiglotic folds -minor role of phonatary funtions of larynx |
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intrinsic laryngeal muscles
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-control vocalization
-thyroarytenoids, cricothyroids, posterior cricoarytenoids (only abductors), lateral crico arytenoids, transverse arytenoids, oblique arytenoids |
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extrinsic laryngeal muscles
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- all have 1 attachment to hyoid bone, and 1 out of larynx
-elevate or lower position of larynx in neck -infrahyoids and suprahyoids |
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infrahyoids
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-ex laryngeal muscles
- below hyoid, depress the larynx -effect pitch -TOSS, thyrohyoids, omohyoids, sternothyroids, sternohyoids |
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suprahyoid laryngeal muscles
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-ex laryngeal muscles
- above hyoid -elevate larynx - digastrics, geniohyoids, mylohyoids, stylohyoids, genioglossus, hyoglossus |
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presbyphonia
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-age related vocie disorder
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fundamental frequency
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-an idividuals typical pitch
-determined by mass, length, elasticity of vf's |
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jitter
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-variations in vocal frequency
-seen in dysphonic patients -measured by sustaining vowel -people w/tremor or harseness may have a high jitter |
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shimmer
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-cycle to cycle variation of itensity
-measured w/sustaine dvowel -people w/roughness may have large amount of shimmer |
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voice quality
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-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) |
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when can tx begin
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-must have a medical evaluation of voice mechanism
- may need to refer to a neurologist |
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Indirect laryngoscopy
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-mirror used to view laryngeal structures during phonation
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direct laryngoscopy
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-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 |
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flexible fiber-optic laryngoscopy
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--thin flexible tube
-goes through nose, over the velum, and into position of above larynx -patient can speak |
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endoscopy
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-flexible(nose) or rigid (oral)
- can be attached to video camera (videoendoscopy) -used to study laryngeal anatomy and physioloogy in detail including mucosal wave |
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sound spectography
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- 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 |
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videostroboscopy
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-helpful indifferentiating between functional and organic disorders
-strobe light, opticcal illusion of slow motion movementof vf's |
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electorglottography (EGG)
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-measures vf closure patterns
-noninvasive -surface electrodes placed on both sides of thyroid carilidge |
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electromyography (EMG)
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-invasive
-measures laryngeal function, needle elctodes are inserted into laryngeal muscles - useful when trying to dtermine vf pathology |
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aerodynamic measurements
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-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) |
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pitch measurements
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-visipitch
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perceptual voice eval
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-subjective
-pitch, volume, resonance, repsiration, sustain phonation -rating scales often used |
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hyponasality vs hypernasiality
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-nasal resonance absent on nasal sounds
-too much nasal resonance on non-nasal sounds |
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phonation assessment
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-MPT, sustain phonation
-s/z ratio |
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resonance disorders
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-hypo/hypernasality
-assimilative nasiality -cul-de-sac resonance |
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hypernasility
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-most common resonance problem
-too much nasal sound -caused by functional (Deaf) or organic (cleft palate) , velopharyngeal insufficiency |
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velopharyngeal insufficiency
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- 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) |
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hyponasality
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-lack of nasal resonance on nasal sounds
substitute b/m, d/n, g/ng -temporary (colds), enlarged adenoids, mouth breathers |
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assimilative nasality
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-when sound from a nasal consonant carries over to adjacent vowels
-functional or organic |
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cul-de-sac resonance
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- tongue is carried too far back in oral cavity
-common in deaf, large adenoids/tonsils |
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functional vs organic resonace disorders
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-O, must be treated medically b4 therapy (surgery, protheses)
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tx of hypernsality
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-biofeedback
-nasometer(visual feedback) - mirror under nose, ear training, increase mouth opening, increase loudness, improve artic, change rate, decrease pitch |
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tx of hyponasality
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- nasometer, biofeedback
-focusing, teaches to feel vibrations in mask -nasal-glide stim -visual aids, tissue, mirror |
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tumors
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-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) |
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3 tx's for laryngeal cancer
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- 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) |
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rehabilitation of larynbgectome
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-team approach
-slp pre & post counsel |
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effects of laryngectome
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- normal voicing impossible
-must breath through stoma - sound can be produced with external devices, esophageal speech, & surgical modifications |
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esophageal speech
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-taught to speak using esophagus using burps
-2 methods: injection method, inhalation method |
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injection method of esophageal speech
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- patient impounds air in mouth, then pushes it back into esophagus, makes soft tissues of esophagus vibrate
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inhalation method of esophageal speech
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- patient inhales rapidly while keeping esophagus open and relaxed, ait moves through esophagus and sets tissues into vibration
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surgical modifications for laryngectome
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- 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 |
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granuloma
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-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 |
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hemangioma
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-similar to granulomas, but soft and filled w/blood
-intubation, reflux - surgery and follow up voice therapy |
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leukoplakia
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-benign thick whitish plaques
-caused: smoking, alcohol, vocal abuse -prescancerous but should be monitored -hoarse, low-pitch, breathy, soft -tx: voice therapy, surgery |
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hyperkeratosis
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-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 |
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papiloma
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- 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 |
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laryngeal web
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- 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 |
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paralysis of vf's
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- 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 |
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ankylosis
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- sitffening of joints (arytenoids), caused by arthritis or cancer
-vf's dont close fully |
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spasmonic dysphonia
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-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 |
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nodules
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- 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 |
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polyps
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-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 |
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tx for abuse based disorders
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- voice therapy, meds, surgery, or combo
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