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19 Cards in this Set
- Front
- Back
respiratory mechanism
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for speech production, pressure inside thoracic cavity will be greater than outside
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external intercostals
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raise ribs up and out to increase diameter of thoracic cavity
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internal intercostals
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pull ribs down to decrease size of thoracic cavity
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subcostals
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pull lower ribs down and apart to decrease diameter of cavity
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physiology of phonation
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subglottic air pressure is higher than supraglottic. As the subglottic air pressure becomes too great to contain, the vocal folds are forced apart in a vibrating manner. the opening of the vocal folds begins posteriorly
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Bernoulli effect
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when a liquid or air moves through a constricted passage, the velocity increases and the pressure decreases.
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resonation
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process by which voiced breath stream is modified to enhance and dampen certain frequency components
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pharyngeal cavity
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part of upper airway; base of tongue is attached here
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oral cavity
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resonating structure for all sounds except /m,n,ng/
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nasal cavity
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many sounds can be produced with a nasal quality, but /m, n,ng/ are the only ture nasal sounds
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articulation
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the molding of the air stream into recognizable speech sounds by several structures in the mouth
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lips
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made primarily by the obicularis oris muscle, play a particularly imp. role in production of bilabials /p,b,m/ and labiodental sounds /f,v/
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palatoglossus
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lowers velum and elevates tongue
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palatopharyngeus
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lowers velum and moves pharyngeal walls inward
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velum/soft palate
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begins at end of hard palate and extends back toward pharynx
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jaw/mandible
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acts as facilitator of articulation and resonance; forms floor of mouth and houses the lower teeth
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teeth
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directly involved in articulation of /f,v,th/
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hard palate
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bony structure separating oral cavity from nasal cavity; forms floor of nose and roof of mouth
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alveolar ridge
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place of lingual contact for several of the front sounds /t,d,s,z,n,l/
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