CSDL10 - 1 Anatomy of Articulation & Resonance...

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Unformatted text preview: 1 Anatomy of Articulation & Resonance Dentition The Vocal Tract Muscles of the Face, Mouth & Pharynx Bones of the Cranium 2 Maxillae Mandible 3 The Tooth ¡ Structure ¢ Crown ¢ Neck ¢ Root ¡ Composition ¢ Enamel ¢ Dentin ¢ Pulp ¢ Cementum Teeth in the Deciduous Arch ¡ Incisors ¡ Cuspids ¡ Molars 4 Teeth in the Permanent Dental Arch ¡ Incisors ¡ Cuspids ¡ Premolars or Bicuspid ¡ Molars Dental Development ¡ Primary purpose is mastication ¡ Deciduous arch (baby teeth) ¢ Temporary ¢ Each arch contains 10 teeth ¡ Permanent arch ¢ Each arch contains 16 ¡ Spatial relationships ¢ Maxillary arch is larger ¢ Maxillary overbite is normal ¡ Dental occlusion ¢ Class I ¢ Class II ¢ Class III ¡ Malocclusion ¢ Open bite: anterior teeth are unable to approximate ¢ Closed bite: posterior teeth are unable to approximate 5 Cavities of the Vocal Tract ¡ Oral ¡ Buccal ¡ Pharyngeal ¢ Oropharynx ¢ Nasopharynx ¢ Laryngopharynx (a.k.a. hypopharynx) ¡ Nasal The Oral Cavity ¡ Extends from the mouth to the faucial pillars ¡ Exit for all oral phonemes ¡ Landmarks ¢ Hard palate ¢ Velum ¢ Anterior & posterior faucial pillars ¢ Palatine tonsils 6 The Tonsils ¡ Purpose ¢ Defense against infection ¢ May help to achieve VP closure ¢ Palatine ¡ Between faucal pillars ¡ May block oropharynx ¢ Pharyngeal ¡ Adenoids ¡ May enlarge in childhood The Mouth and Lips ¡ The Mouth ¢ Major role in articulation ¢ Important biologically ¡ Lips ¢ Opening of the oral cavity ¢ Four layers of tissue ¡ Cutaneous ¡ Muscular ¡ Glandular ¡ Mucous ¢ Landmarks ¡ Philtrum ¡ Vermillion border ¡ Frenulum 7 The Buccal Cavity ¡ Lateral to the oral cavity ¡ Space between the posterior teeth and the cheeks ¡ Role in oral resonance ¡ Involved in high-pressure consonant production The Pharyngeal Cavity ¡ Important role in swallowing & VP closure ¡ Oropharynx ¢ Velum to hyoid bone ¡ Hypopharynx ¢ Epiglottis to esophagus ¡ Nasopharynx ¢ Space above the velum ¡ Orifice of the Eustachian tube ¢ Torus tubarius ¢ Salpingopharyngeal fold ¡ Pharyngeal tonsil ¢ Adenoids 8 The Nasal Cavity ¡ Formed by the paired maxillae, palatine & nasal bones ¡ Divided by the nasal septum ¡ Nares ¡ Nasal choanae ¢ Posterior portals connecting the nasal cavities and nasopharynx ¡ Hard palate Muscles of the Face ¡ Orbicularis Oris ¡ Buccinator ¡ Mentalis ¡ Depressor Anguli Oris ¡ Depressor Labii Inferior ¡ Risorius ¡ Levator Labii Superior ¡ Levator Labii Superior Anaeque Nasi ¡ Levator Anguli Oris ¡ Zygomatic Major ¡ Zygomatic Minor ¡ Platysma All of these muscles are innervated by the Facial Nerve (VII) 9 Orbicularis Oris ¡ O: corner of lips ¡ I: opposite corner of lips ¡ In: Facial Nerve (VII) Orbicularis Oris ¡ Single muscle encircling the mouth opening OR ¡ Paired superior & inferior muscles ¡ “drawstring” pulling the lips together ¡ Interacts with other muscles of the face to produce facial expression ¡ Serves as the point of insertion for many other facial muscles 10...
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This note was uploaded on 04/10/2008 for the course CSD 315/615 taught by Professor Rachaeldemarco during the Spring '08 term at Syracuse.

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CSDL10 - 1 Anatomy of Articulation & Resonance...

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