Phonatory System - Physiology
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overall what is the function
produce voiced/less sounds modify.. pitch loudness quality
what is the bio function
prevent air from escaping prevent forigen subst from entering expel forigen substances
what is the larynx protective role in swallowing
prevent solids and liquids from entering lower resp tract
what are the 3 levels of swallowing
1- larynx pulled up and forward 2- epiglottis pulled down 3- glottis closed tight
3 muscles involved in 1- larynx pulled up and forward
digastic mylohyoid geniohypoid
result of 1- larynx pulled up and forward
moves epiglottis over top of airway pulls larynx out of way
musclues involved in 2- epiglottis pulled down
aryepiglottic muscle
result of 2- epiglottis pulled down
entrance of larynx covered
muscles involved in 3- glottis closed tight
adductors- lateral cricoarytenoids transverse arytenoid oblique arytenoid
result of 3- glottis closed tight
airway shut off breathig stopped momentarillay durring exhalation
phonotation =
vibrations
vibrations are generated from…
air pressure
what kind of event are the vibrations
aeromechanical event
what event does the aeromechanical event produce
acostic event
large glottis
muscle involved in large glottis
posterior cricoarytenoids
what could be happening?
breathing - forced inhalation - exercise
muscles involved in medium glottis
posterior cricoarytenoids
what could be happening?
quiet breathing voiceless sounds
what occurs in voiceless sounds
vf abducted breiwf unobstructed airflow airflow alt in oral cavity
no glottis
muscle involved in no glottis
adductors
what could be happening
phonotation (voiced) breath holding
What happens in phonotation
voiced sounds vf adduct obstruct air flow momentarily