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

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

3. Tooth Innervation

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

8. Lingual nerve crosses the submandibular duct twice!

9. buccinator

10. Salivary Glands

11. parotid duct

13. Muscles Tensor veli Levator veli Palatoglossus Palatopharyngeus
Musculus uvulae

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

15. XII lesion: tongue deviates to ipsilateral side

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

17. Tongue Veins
Return to IJ directly or indirectly
Sublingual absorption

18. Tongue Topography Sulcus terminalis Foramen cecum
Median sulcus and septum

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

20. palatoglossal fold

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

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

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

24. Lab