Oral cavity anatomy

Question 1

Which bone is the arrow pointing to?

Answer 1

Hyoid bone

Question 2

Answer 2

Frenum

Question 3

Is the mucosa on the floor of the mouth thin or thick?

Answer 3

Very thin

Question 4

What nerve supplies the parotid salivary glands? Is this parasympathetic or sympathetic innervation?

Answer 4

CN 9 (Glossopharyngeal) Parasympathetic

Question 5

What nerve supplies the submandibular salivary glands? Is this parasympathetic or sympathetic innervation?

Answer 5

Facial nerve via the chorda tympani branch. Parasympathetic

Question 6

What nerve supplies the sublingual salivary glands? Is this parasympathetic or sympathetic innervation?

Answer 6

Fcial nerve via chorda tympani branch. Parasympathetic

Question 7

What nerve supplies the posterior part of the tongue?

Answer 7

Glossopharyngeal nerve

Question 8

What nerve supplies the general and sensory aspects of the tongue?

Answer 8

General: CN V3 (branch of trigeminal)

Special sensory: CN VII (chorda tympani branch of facial nerve)

Question 9

What is the V shaped grrove that marks the junction between the anterior and posterior tongue called?

Answer 9

The foramen cecum

Question 10

Which extrinsic tongue muscle is this?

Answer 10

Genioglossus

Question 11

Which extrinsic tongue muscle is this?

Answer 11

Hyoglossus

Question 12

Answer 12

Masseter

Question 13

Answer 13

Mylohyoid muscles

Question 14

Answer 14

Geniohyoid muscles

Question 15

Answer 15

Stylohyoid muscles

Question 16

Answer 16

Omohyoid

Question 17

What nerve supplies most of the tongue muscles?

Answer 17

The hypoglossal nerve (CN XII)

Question 18

What nerve is shown in the picture. What does it supply?

Answer 18

The right hypoglossal nerve

Question 19

If the right hypoglossal nerve is injured and you ask the patient to stick their tongue out straight, which way will their tongue bend?

Answer 19

To the right. TOWARDS the sight of the injured nerve

Question 20

What sort of epitheliul is foufn on the hard palate?

Answer 20

Keratinised stratified squamous epithelium

Question 21

What sort of epithelium is found on the soft palate?

Answer 21

Non keratinised stratified squamous epithelium

Question 22

Answer 22

Uvula

Question 23

What would lie in this triangle in early life?

Answer 23

The tonsil

Question 24

What nerve suplies the muscles of the soft palate except tensor veli palatini?

Answer 24

Vagus

Question 25

Answer 25

Posterior border of the ramus of the mandible

Question 26

Answer 26

Zygomatic arch

Question 27

Answer 27

Sternocleidomastoid

Question 28

Answer 28

Masseter

Question 30

Answer 30

Posterior belly of the digastric muscle

Question 31

Answer 31

Stylohyoid muscle

Question 32

What nerve provides motor innervation to all the muscles of facial expression?

Answer 32

Facial nerve

Question 33

Answer 33

Parotid gland

Question 34

What nerve is this?

Answer 34

Facial nerve

Question 35

What muscle does the parotid duct go through to get into the face?

Answer 35

Buccinator

Question 36

Answer 36

Parotid duct

Question 38

Above which tooth does the parotid duct secrete saliva?

Answer 38

Upper second molar tooth

Question 39

Answer 39

Styloglossus

Question 40

Answer 40

Sublingual gland

Question 41

Answer 41

Submandibular duct

Question 42

Answer 42

Submandibular gland

Question 43

What is the function of the soft palate?

Answer 43

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

Question 45

What nerve supplies all the paranasal sinueses?

Answer 45

Trigeminal nerve (V1 and V2)