Oral Cavity

Question 1

Where is the oral cavity?

Answer 1

Inferior to nasal cavities
Roof consists of hard and soft palate
Continue to the oropharynx and pharynx

Question 2

Surface anatomy of the oral cavity

Answer 2

Labial frenulums
Hard and so\ palate
Palatoglossal arch
Palatopharyngeal arch
Palatine tonsil
Tongue
Uvula
Lingual frenulum
Salivary duct openings

Question 3

Oral vestibule

Answer 3

Between teeth and lining of lips and cheeks

Question 4

Oral cavity proper

Answer 4

Lateral: teeth and gums
Superior: palates
Posterior: to oropharynx
Floor: tongue

Question 5

Components of oral vestibule

Answer 5

Lips (Philtrum, Skin, Fat, OO)

Cheeks (Buccinator)

Question 6

oral cavity proper

Answer 6

Palate, hard palate, and soft palate

Question 7

Palate

Answer 7

roof of oral cavity proper and floor of nasal cavity

Question 8

Hard palate

Answer 8

Formed by 2 bones [Maxilla (palatine process), Palatine bone]
Consists of 3 sets of foramina
Help food chewing

Question 9

Soft palate

Answer 9

close nasopharynx

Question 10

3 sets of foramina

Answer 10

Incisive fossa, greater palatine foramen, and lesser palatine foramen

Question 11

Incisive fossa

Answer 11

Nasopalatine nerve

Question 12

Greater palatine foramen

Answer 12

Greater palatine nerve

Greater palatine artery

Question 13

Lesser palatine foramen

Answer 13

Lesser palatine nerve

Lesser palatine artery

Question 14

Sets of muscles in soft palate

Answer 14

Tensor veli palatini Levator veli palatini Palatopharyngeus Palatoglossus
Musculus uvulae

Question 15

Tensor veli palatini IM

Answer 15

Tenses soft palate, opens pharyngotympanic tube when swallowing
CNV3

Question 16

Levator veli palatini IM

Answer 16

Elevates soft palate when swallowing

CNX

Question 17

Palatopharyngeus IM

Answer 17

Elevates larynx and pharynx

CNX

Question 18

Palatoglossus

Answer 18

Elevates 1/3 of the
posterior tongue
CNX

Question 19

Musculus uvulae IM

Answer 19

Elevates uvula

CNX

Question 20

3 major salivary glands

Answer 20

Parotid gland

Submandibular gland Sublingual gland

Question 21

Parotid gland

Answer 21

Biggest among the three
Parotid duct pierces the buccinator muscle to enter the oral cavity
Structures that pass through the parotid gland

Question 22

tongue functions

Answer 22

Swallowing
Speech
Mastication
Taste

Question 23

Dorsal surface of tongue

Answer 23

Sulcus terminalis
Circumvallate papillae
Foliate and fungiform papillae
Filiform papillae

Question 24

Circumvallate papillae

Answer 24

Contains taste buds

Question 25

Foliate and fungiform papillae

Answer 25

Contain taste buds

Question 26

Filiform papillae

Answer 26

No taste buds

Question 27

Ventral surface on tongue

Answer 27

Frenulum
Submandibular duct opening
Sublingual papilla
Sublingual fold

Question 28

Extrinsic muscles of the tongue

Answer 28

Styloglossus, genioglossus, hypoglossus

Question 29

Styloglossus IM

Answer 29

Elevates and retracts the tongue

CNXII

Question 30

genioglossus IM

Answer 30

Depresses and protrudes the tongue

CNXII

Question 31

hypoglossus IM

Answer 31

Depresses and retracts the tongue

CNXII

Question 32

Intrinsic muscles of the tongue

Answer 32

superior longitudinal, inferior longitudinal, transverse and vertical muscles

Question 33

Superior longitudinal IM

Answer 33

Shortens and curls tongue

CNXII

Question 34

Inferior longitudinal IM

Answer 34

Shortens and uncurls tongue

CNXII

Question 35

transverse and vertical IM

Answer 35

T: Narrows tongue
V: Flattens tongue
CNXII

Question 36

arterial supply of the tongue

Answer 36

Lingual artery (Branches out of external carotid artery)
Sublingual artery
Deep lingual artery

Question 37

Floor of the oral cavity

Answer 37

Hyoid bone Mylohyoid Geniohyoid

Question 38

Mylohoid function

Answer 38

supports the floor of oral cavity

Question 39

Geniohyoid function

Answer 39

Elevates the hyoid when mandible is fixed

Depresses mandible when hyoid is fixed