1. ORAL CAVITY

2. Skeletal Framework Hard palate: Teeth: Anterior two-thirds of palate.
Palatine folds of maxillae.
Palatines.
Soft palate:
Posterior third of palate.
Fibromuscular fold.
Teeth:
Maxillary.
Mandibular.

3. Mucous Membranes Vestibule: Between lips/cheeks and gums/teeth.
Leads to:
Oral cavity proper.
Receives:
Parotid duct:
Opposite upper second molar.

4. Mucous Membranes Oral cavity: Uvula Bounded by: Leads to:
Teeth and gums.
Hard/soft palates.
Leads to:
Pharynx (oropharynx).
Uvula

5. Sensory Innervation of Mucous Membranes
CN V-2:
Greater and lesser palatine nerves.
Nasopalatine nerves.
CN V-3:
Lingual nerve:
Floor of mouth.
Buccal nerve:
Vestibule and cheek.

6. Motor Innervation to Mucous Membranes/Glands
Sympathetics:
See nasal cavity.
Sublingual and submandibular glands:
Parasympathetics:
From:
Superior salivatory nucleus via CN VII.
To:
Submandibular/sublingual ganglion.
Submandibular and sublingual glands.

7. Motor Innervation to Mucous Membranes/Glands
Parotid gland:
Parasympathetics:
From:
Inferior salivatory nucleus via CN IX.
To:
Otic ganglion.
Parotid gland.

8. Innervation of Teeth Maxillary teeth: Mandibular teeth:
Superior alveolar branches of CN V-2.
Mandibular teeth:
Inferior alveolar branches of CN V-3.

9. Innervation of Tongue General sensory: Anterior two-thirds:
CN V-3 via lingual nerve.
Posterior one-third:
CN IX.

10. Innervation of Tongue Taste: Anterior two-thirds: Posterior one-third:
CN VII via chorda tympani.
Posterior one-third:
CN IX.

11. Tongue Tongue is a mass of skeletal muscles covered by mucosa.
Location:
Anterior two-thirds in oral cavity proper.
Posterior third in oropharynx.
Sulcus terminalis.
Foramen cecum.
Frenulum.
All intrinsic and extrinsic muscles of the tongue are innervated by CN XII.

12. Oropharynx
Extends:
From:
Soft palate above.
To:
Upper border of epiglottis below.
Lies at level of second and third cervical vertebrae.

13. Oropharynx Contains: Palatine tonsils: Encapsulated.
Tonsilar branch of facial artery.
Glossopharyngeal nerve.

15. Oropharynx Palatopharyngeus muscle:
Posterior border of hard palate to fascia on lateral and posterior wall of pharynx and thyroid cartilage.
Elevates pharynx during swallowing.
Vagus nerve (pharyngeal plexus).

16. Oropharynx Palatoglossus muscle:
From soft palate to lateral surface of posterior tongue.
Depresses palate.
Vagus nerve (pharyngeal plexus).

17. Oropharynx Tensor veli palatini:
From scaphoid fossa of sphenoid bone and cartilaginous part of auditory tube to soft palate.
Tenses soft palate.

18. Oropharynx Levator veli palatini: Uvula
From petrous temporal bone and cartilaginous part of auditory tube to soft palate.
Elevates soft palate.
Uvula