Oral Cavity
Stylohyoid
Innervation
Facial nerve (CN VII)
Stylohyoid
Funtion
Elevates hyoid bone
Posterior Belly of Digastric
Innervation
Facial nerve (CN VII)
Posterior Belly of Digastric
Function
Elevate hyoid or depress mandible
Mylohyoid
Innervation
Mandibular division of trigeminal (CN V3)
Mylohyoid
Function
Elevate hyoid and oral floor or depress mandible
Salivary glands Innervation
Parotid
CN IX
Salivary glands Innervation
.Sub-mandibular
CN VII
Salivary glands and Ducts
Tongue
Innervation of the Tongue.
Intrinsic Muscles of the Tongue
Innervation
Hypoglossal nerve (CN XII)
Intrinsic Muscles of the Tongue
Function
Changes shape of tongue with muscles in different orientations. All of the fibres are within the tongue itself.
Extrinsic Muscles of the Tongue
Function
Change position of tongue in the mouth
Extrinsic Muscles of the Tongue
Originate
Outside of the tongue, inserting into it
Extrinsic Muscles of the Tongue
Innervation
Hypoglossal nerve (CN XII) except for palatoglossus which is innervated by the vagus nerve (CN X) in the pharyngeal plexus.
Extrinsic Muscles of the Tongue
Palatoglossus Function
Elevates tongue (moves soft palate)
Extrinsic Muscles of the Tongue
Styloglossus function
Elevates and retracts tongue
Extrinsic Muscles of the Tongue
Hyloglossus function
Depresses tongue
Extrinsic Muscles of the Tongue
Genioglossus function
Depresses tongue and protrudes tip
Blood Supply to Tongue
Nerves to Tongue
Tongue Lymphatics
Hard Palate
Hard Palate Innervation
Soft Palate
Internal Facial Structures
Soft Palatine Nerves/arteries
CNV2 and CNV3
Facial Venous Drainage