Oral cavity and submandibular gland Flashcards
(29 cards)
What is under the tongue (grays anatomy picture)
Frenulum of tongue Fimbriated fold Opening of sublingual gland Opening of submandibular gland Sublingual caruncles Sublingual fold Deep lingual vein
Surface of the tongue (grays pic)
Fungiform papillae Filiform papillae Foliate papillae Vallate papillae Foramen caecum Pharyngeal part of tongue
Surface anatomy soft palate
Uvula Palatoglossal arch Palatine tonsil Palatopharyngeal arch Posterior wall of oropharynx
Oral cavity boundaries
Roof= hard and soft palate Floor= muscular diaphragm and tongue Walls= fascia and a layer of skeletal muscle (buccinator)
Bony roof of oral cavity
Maxillary
Horizontal part of palantine bone
Bit of sphenoid bone
Floor of oral cavity muscles
Mylohyoid muscle
Geniohyoid muscle
Tongue
Muscles of the tongue
Extrinsic: Palatoglossus Styloglossus Hyoglossus Genioglossus Intrinsic: Superior longitudinal Vertical, Transverse Inferior longitudinal
Mylohyoid origin insertion innervation
Most anterior
Originates on mylohyoid line of the mandible
Inserts posteriorly on the body of the hyoid bone
V3
Geniohyoid origin insertion innervation
Sits on top of myohyoid
Originates on inferior mental spines of the mandible
Inserts on body of hyoid bone
C1
Boundaries of triangular aperture
Free lateral border of mylohyoid
Superior constrictor of pharynx
Middle constrictor of pharynx
Contents of triangular aperture
Lingual artery and vein
Lingual, hypoglossal and glossopharyngeal nerves
Stylopharyngeus
Genioglossus origin insertion innervation
Sits on top of geniohyoid
O- superior mental spines of mandible
I- body of hyoid
Hypoglossal nerve
Motor Innervation of tongue muscles
All hypoglossal except palatoglossus-vagus
Why is the hyoglossus muscle an important landmark
Hyoglossus sits lateral to genioglossus
Lingual artery enters the tongue deep to the hyoglossus
Hypoglossal nerve and lingual nerve enter the tongue via the external surface of the glossus
Sensory innervation of the tongue
Anterior 2/3 Taste= chorda tympani
Sensation= lingual
Posterior 1/3 Glossopharyngeal
Taste innervation of the tongue
Anterior 2/3= Chorda tympani branch of facial nerve
Posterior 1/3= Glossopharyngeal
three muscles closely related to submandibular gland
Mylohyoid, hyoglossus and posterior belly of digastric
three nerves at risk when removing submandibular gland
Marginal mandibular branch of the Facial nerve-paralysis of lower lip muscles
Lingual-loss of taste to ant 2/3
Hypoglossal-dysarthria
Where is submandibular gland
Deep part hooks around outside of mylohyoid and superficial part sits underneath mylohyoid
Where does submandibular duct emerge and begin
Begins at superficial part but emerges from the deep part. Sublingual caruncle by the base of frenulum of the tongue
What are those rough bits on the top of your mouth called
Palentine rugae
Blood and nerves to the bony top of your mouth
Greater palantine artery
Nasopalantine nerve
Greater palantine nerve
Muscles of the soft palate and innervation
Tensor veli palatini V3 Levator veli palatini CN10 Palatopharyngeus CN10 Palatoglossus CN10 Musculus Uvulae CN10
Lymphatic drainage of oral cavity
I and II on that weird numbered drawing of the neck
