R. Shane Tubbs, MS, PA-C, PhD

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Presentation transcript:

R. Shane Tubbs, MS, PA-C, PhD The Oral Cavity R. Shane Tubbs, MS, PA-C, PhD

Teeth 32 adult/20 “milk” teeth Medial/lateral incisor Canine 2 premolars 3 molars

Tooth Innervation

Hard Palate posterior nasal spine Palatine process maxillary bone Horizontal plate palatine bone > (3rd molar), < palatine foramina Incisive foramen posterior nasal spine

Lingual nerve crosses the submandibular duct twice!

buccinator

Salivary Glands

parotid duct

Muscles Tensor veli Levator veli Palatoglossus Palatopharyngeus Musculus uvulae

Extrinsic Tongue (L. lingua; G. glossa) Muscles

XII lesion: tongue deviates to ipsilateral side

Lymphatic Drainage Gingivae and all teeth less the mandibular incisors drain into the submandibular lymph nodes Tongue:

Tongue Veins Return to IJ directly or indirectly Sublingual absorption

Tongue Topography Sulcus terminalis Foramen cecum Median sulcus and septum

Papillae Vallate Foliate: lateral and poorly developed in humans; Filiform: touch receptors (raspy); no taste buds Fungiform:

palatoglossal fold

Taste Tongue (Vallate, foliate, and fungiform) Soft palate Oral pharynx Epiglottis

Taste (SVA) X IX VII Geniculate ganglion Inferior ganglion IX Inferior ganglion X X IX VII

General Sensation GSA of lingual anterior 2/3 GVA of IX posterior 1/3

Lab