Phonatory System
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Last updated 4:32 AM on 2/21/23
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42 Terms
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bernoulli effect
relationship between velocity and air pressure
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increase of velocity
decrease in air pressure
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myo
muscles adduct fold
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elasticity
vocal folds to stretch
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myoelastic aerodynamic theory
most accepted theory of voice production
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aerodynamic
subglottal pressure from lungs drives vibration
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crioarytenoid joints
open and close the vocal folds
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movement of criocoarytenoid joints
thryoid cartilage tilts downward toward the cricoid so arch comes close to the thyroid
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cricothyroid joints
stretching the fold
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frequency =
pitch
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stretching folds =
high notes
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relax folds =
low pitch
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larger the pipe
lower the pitch
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men \~
125 hz
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women \~
200 hz
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children\~
300+ hz
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pitch based on
size of vibrating mass
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cover
mocous membran
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body
muscle
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intrinsic laryngeal
determine how tightly the body and cover are connected in phonation
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function of larynx
control airflow, protect the larynx during swallowing, provides sound for speech
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hyoid bone
between jaw and larynx
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epiglottis
covers larynx during swallowing
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thyroid cartilage
encloses the larynx anteriorly
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cricoid cartilage
supports arytenoids
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glottis
space between the vocal fold
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abduction
folds are separate for voiceless sounds and breathing
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adduction
folds are together for phonation
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rest position
abduction
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voiced sounds
adduction
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posterior cricoarytenoids
arytenoid caartilages and dorsal plates of cricoid cartilages
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interarytenoid
left and right arytenoid cartilages
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left and right arytenoid cartilages
draws arytenoids posteriorly and adduct vocal folds
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lateral cricoarytenoid
muscular processes of arytenoid cartilages and lateral margins of cricoid cartilage
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LCA
assist in adduction and draws arytenoids forward and down
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breathiness
incomplete vocal fold adduction
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hoarseness
irregularities in laryngeal tissue
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contact ulcer
lesions produced by impact of vocal folds during phonation
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intensity =
loudness
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intensity
physical components of the sound wave
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loud voice
more air in lungs
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phonation
sound at the larynx
