Oral cavity anatomy Flashcards
Which bone is the arrow pointing to?
Hyoid bone
Frenum
Is the mucosa on the floor of the mouth thin or thick?
Very thin
What nerve supplies the parotid salivary glands? Is this parasympathetic or sympathetic innervation?
CN 9 (Glossopharyngeal) Parasympathetic
What nerve supplies the submandibular salivary glands? Is this parasympathetic or sympathetic innervation?
Facial nerve via the chorda tympani branch. Parasympathetic
What nerve supplies the sublingual salivary glands? Is this parasympathetic or sympathetic innervation?
Fcial nerve via chorda tympani branch. Parasympathetic
What nerve supplies the posterior part of the tongue?
Glossopharyngeal nerve
What nerve supplies the general and sensory aspects of the tongue?
General: CN V3 (branch of trigeminal)
Special sensory: CN VII (chorda tympani branch of facial nerve)
What is the V shaped grrove that marks the junction between the anterior and posterior tongue called?
The foramen cecum
Which extrinsic tongue muscle is this?
Genioglossus
Which extrinsic tongue muscle is this?
Hyoglossus
Masseter
Mylohyoid muscles
Geniohyoid muscles
Stylohyoid muscles
Omohyoid
What nerve supplies most of the tongue muscles?
The hypoglossal nerve (CN XII)
What nerve is shown in the picture. What does it supply?
The right hypoglossal nerve
If the right hypoglossal nerve is injured and you ask the patient to stick their tongue out straight, which way will their tongue bend?
To the right. TOWARDS the sight of the injured nerve
What sort of epitheliul is foufn on the hard palate?
Keratinised stratified squamous epithelium
What sort of epithelium is found on the soft palate?
Non keratinised stratified squamous epithelium
Uvula
What would lie in this triangle in early life?
The tonsil
What nerve suplies the muscles of the soft palate except tensor veli palatini?
Vagus
Posterior border of the ramus of the mandible
Zygomatic arch
Sternocleidomastoid
Masseter
Posterior belly of the digastric muscle
Stylohyoid muscle
What nerve provides motor innervation to all the muscles of facial expression?
Facial nerve
Parotid gland
What nerve is this?
Facial nerve
What muscle does the parotid duct go through to get into the face?
Buccinator
Parotid duct
Above which tooth does the parotid duct secrete saliva?
Upper second molar tooth
Styloglossus
Sublingual gland
Submandibular duct
Submandibular gland
What is the function of the soft palate?
To act as a trapdoor to stop food entering the nose during swallowing, to direct air into the mouth during coughing/vomiting/talking and to help close of the entrence into the oropharynx during the gag reflex
What nerve supplies all the paranasal sinueses?
Trigeminal nerve (V1 and V2)
