W2: S7 - Oral Cavity, Palate and Oropharynx

Question 1

What is the oral vestibule?

Answer 1

The space between the teeth and the cheeks

Question 2

What is the name of the muscle that lies in the lateral walls of the oral cavity?

Answer 2

Buccinator

Question 3

What is the nerve supply of the buccinator?

Answer 3

Facial

Question 4

What muscle’s contraction causes closing/pursing of the lips?

Answer 4

Obicularis oris

Question 5

What is the name of the posterior opening of the oral cavity?

Answer 5

Oropharyngeal isthmus

Question 6

What are the functions of the tongue?

Answer 6

Moving food during chewing

Speech

Initiation of swallowing

Question 7

What is the name given to the v-shaped sulcus that divides the tongue into an anterior 2/3rds and posterior 1/3rd?

Answer 7

Terminal sulcus

Question 8

What is the foramen caecum an embryological artefact of?

Answer 8

It’s the site of formation and descension of the thyroglossal duct

Question 9

What are the 4 types of papillae on the anterior tongue?

Answer 9

Filiform

Fungiform

Valate

Follate

Question 10

Which of the three anterior tongue papillae have tastebuds?

Answer 10

Fungiform

Valate

Question 11

What forms the surface projections of the posterior 1/3rd of the tongue?

Answer 11

Submucosal lymphoid tissue

• Lingual tonsil

Question 12

What lines the inferior surface of the tongue?

Answer 12

Smooth mucous membrane

Question 13

What is the name of the fold of mucous membrane that fixes the tongue to the floor of the mouth?

Answer 13

Frenulum

Question 14

Answer 14

Question 15

What is the general sensory innervation of the anterior 2/3rds of the tongue?

Answer 15

Mandibular V3

Question 16

What is the taste sensation of the anterior 2/3rds of the tongue?

Answer 16

Chorda tympani branch of facial

Question 17

What is the general sensory innervation of the posterior 1/3rds of the tongue?

Answer 17

Glossopharyngeal nerve

Question 18

What is the taste sensation of the posterior 2/3rds of the tongue?

Answer 18

Glossopharyngeal nerve

Question 19

What are the two types of muscles of the tongue?

Answer 19

Intrinsic

Extrinsic

Question 20

What is the definition of the intrinsic muscles?

Answer 20

Originate and insert inside the tongue

Question 21

What is the definition of extrinsic muscles of the tongue?

Answer 21

Muscles that attach to the tongue from surrounding bone or the soft palate

Question 22

Where are the intrinsic muscles mainly concentrated?

Answer 22

The dorsal surface

Question 23

What is the collective function of the intrinsic muscles?

Answer 23

Change the shape of the tongue

Question 24

Name the 4 extrinsic muscles of the tongue

Answer 24

• Genioglossus
• Hyoglossus
• Styloglossus
• Palatoglossus

Question 25

Identify the extrinsic muscles of the tongue n.b. palatoglossus is not there

Answer 25

Question 26

What nerve innervates all the intrinsic and extrinsic muscles of the tongue except the palatoglossus?

Answer 26

Hypoglossal nerve

Question 27

What nerve innervates the palatoglossus?

Answer 27

Glossopharyngeal nerve

Question 28

What are the 3 main salivary glands?

Answer 28

- Parotid - Submandibular - Sublingual

Question 29

What artery grooves the undersurface of the submandibular gland?

Answer 29

Facial artery

Question 30

What type of innervation do the cranial nerves give the salivary gland?

Answer 30

Parasympathetic

Question 31

What nerve supplies the parotid gland with parasympathetic innervation?

Answer 31

Glossopharyngeal

Question 32

What nerve supplies the submandibular gland with parasympathetic innervation?

Answer 32

Chorda tympani branch of facial

Question 33

What nerve supplies the sublingual glands with parasympathetic innervation?

Answer 33

Chorda tympani branch of facial

Question 34

Name the 5 muscles of the soft palate?

Answer 34

Tensor veli palatini Levator veli palatini Muscularis uvula Palatopharyngeus Palatoglossus

Question 35

What nerve supplies all the muscles of the soft palate?

Answer 35

Vagus

Question 36

What is the collective action of the palate muscles?

Answer 36

Closing the nasal passage during swallowing by raising the throat

Question 37

Answer 37

A - Palatoglossal fold B - Palatopharyngeal fold C - Oropharynx D - Frenulum E - Opening for submandibular and sublingual glands F - Palatine tonsils G - Uvula

Question 38

What structure lies between the two folds of mucosa overlying the palatoglossus and palatopharyngeus muscles?

Answer 38

Palatine tonsils

Question 39

What type of tissue makes up the palatine tonsils?

Answer 39

Lymphoid