oral cavity

Question 1

oral cavity borders

Answer 1

lips, cheeks, palatoglossal folds, palate, mylohyoid m.

Question 2

vestibule is the…

Answer 2

space between the lips/cheeks and the teeth

Question 3

oral cavity proper is the…

Answer 3

space between teeth

Question 4

Answer 4

palatoglossal arch

Question 5

external features of the oral cavity (4)

Answer 5

1. Lips – thin less pigmented epithelium, superficial vascular supply
   * No sweat/sebaceous glands
   * Labial glands are present at border of lips and oral mucosa
2. Angle of the mouth = commissure of the lips
3. Philtrum – midline depression between nose and upper lip
4. Vermillion border – transition between lips and skin
   * Site of infections, cold sores, cheilitis (various inflammation)

Question 6

mucolabial fold vs mucobuccal fold

Answer 6

mucolabial: teeth and lips
mucobuccal: teeth and cheeks

Question 7

what features are within the cheeks?

Answer 7

buccal submucosa with glands
buccinator
parotid papilla (opposite 2nd molar)

Question 8

Answer 8

Question 9

Answer 9

Question 10

sublingual caruncles

Answer 10

openings for sublingual and submandibular gland ducts, on either side of lingual frenulum
*associated with glands

Question 11

sublingual folds

Answer 11

tubular ducts for sublingual gland – empty saliva here below tongue
*associated with glands

Question 12

submandibular ducts aka

Answer 12

Wharton’s duct

Question 13

gingiva is a _____ layer covering alveolar bone

Answer 13

mucousal

Question 14

fuaces that separate oral cavity from pharynx

Answer 14

palatoglossal arch
palatine tonsils
palatopharyngeal arch

Question 15

Answer 15

green: palatoglossal arch
red: palatine tonsils
yellow: palatopharyngeal arch

Question 16

vasculature of the fauces

Answer 16

• Descending palatine artery (maxillary a.)
• Ascending palatine a. (br of facial a.)
• Tonsillar br. (facial a.)
• Ascending pharyngeal a. (br of ECA)
• Dorsal lingual a. (br of lingual a.)

Question 17

innervation of the fauces

Answer 17

• CN V-2 - Lesser palatine n. sensory and innervates
  the tonsil
• CN VII – parasympathetic Gr. Petrosal
  fibers = glands
• Sympathetic – Deep Petrosal fibers
• CN IX – Sensory (posterior)

Question 18

what is the landmark for anesthetic injection for the IA block?

Answer 18

pterygomandibular raphe

Question 19

What muscle attachments is pterygomandibular raphe made up of?

Answer 19

posterior attachment for buccinator
anterior attachment for pharyngeal constrictor

Question 20

What innervates the 1st molar
MB Cusp USUALLY?

Answer 20

middle superior alveolar nerve

*posterior superior alveolar nerve to the palatal and distobuccal roots

Question 21

Foliate papilla are located

Answer 21

on sides of tongue

Question 22

fungiform papilla are located on the

Answer 22

dorsum

Question 23

filiform papilla are located on the

Answer 23

central/dorsum

Question 24

circumvallate papilla are located

Answer 24

in the medial plane

Question 25

muscles of the oral cavity (7)

Answer 25

mylohyoid geniohyoid stylohyoid hyoglossus styloglossus palatoglossus geniorglossus

Question 26

Answer 26

mylohyoid muscle

Question 27

mylohyoid muscle function

Answer 27

elevate hyoid and tongue during swallowing

Question 28

geniohyoid muscle function

Answer 28

elevate hyoid and tongue during swallowing

Question 29

geniohyoid muscle origin and insertion

Answer 29

inferior mental spine to body of hyoid bone

Question 30

stylohyoid muscle function

Answer 30

elevate hyoid during swallowing

Question 31

Answer 31

geniohyoid muscle

Question 32

Answer 32

stylohyoid muscle

Question 33

extrinsic vs intrinsic tongue muscle definition

Answer 33

Extrinsic – from somewhere else to the tongue Intrinsic – entirely contained in the tongue

Question 34

extrinsic tongue muscles (4)

Answer 34

hyoglossus styloglossus palatoglossus genioglossus

Question 35

hyoglossus muscle origin and insertion

Answer 35

greater horn of hyoid to the lateral tongue

Question 36

hyoglossus muscle function

Answer 36

retract and depress the tongue

Question 37

Answer 37

hyoglossus muscle

Question 38

styloglossus muscle origin and insertion

Answer 38

styloid process to the lateral tongue

Question 39

styloglossus muscle function

Answer 39

retract and elevate the tongue

Question 40

Answer 40

styloglossus

Question 41

palatoglossus muscle function

Answer 41

elevate the posterior tongue

Question 42

Answer 42

palatoglossus muscle

Question 43

genioglossus muscle function

Answer 43

protrude or depress the tongue elevate or depress the apex of tongue

Question 44

genioglossus muscle origin and insertion

Answer 44

genial tubercle to the meshwork of muscles

Question 45

intrinsic tongue muscles (4)

Answer 45

superior longitudinal muscle vertical muscle transverse muscle inferior longitudinal muscle

Question 46

functions of intrinsic tongue muscles

Answer 46

Superior and inferior longitudinal – shorten tongue, curl up or down Transverse – narrows and lengthens tongue Vertical – flattens and widens tongue

Question 47

innervation mylohyoid: geniohyoid: stylohyoid: hyoglossus: styloglossus: palatoglossus: genioglossus:

Answer 47

mylohyoid: CN V-3 geniohyoid: Cervical 1 through CN XII stylohyoid: CN VII hyoglossus: CN XII styloglossus: CN XII palatoglossus: CN X genioglossus: CN XII

Question 48

motor tongue innervation via

Answer 48

CN XII *except palatoglossus m. -> CN X

Question 49

hard/soft palate blood supple

Answer 49

Question 50

Answer 50

Question 51

Answer 51

Question 52

Answer 52

Question 53

Answer 53

Question 54

Answer 54

Question 55

Answer 55

Question 56

artery of the tongue

Answer 56

lingual artery

Question 57

branches of the lingual artery

Answer 57

dorsal lingual sublingual deep

Question 58

dorsal lingual artery emerges...

Answer 58

posterior to hyoglossus

Question 59

dorsal lingual artery supplies the

Answer 59

dorsum, posterior 1/3 of tongue, mucosa of palatoglossal arch, tonsil, epiglottis, and soft palate

Question 60

sublingual artery supplies the

Answer 60

floor of oral cavity, mucosa, sublingual gland, surrounding muscles

Question 61

deep lingual artery supplies the

Answer 61

inferior surface of tongue up to tip

Question 62

oral cavity lymphoid tissue drains into the

Answer 62

submandibular nodes (lingual)

Question 63

the oral cavity lymphoid tissue monitors...

Answer 63

air water and food as its taken in

Question 64

the lingual/palatine tonsils drain into

Answer 64

submandibular nodes

Question 65

Answer 65

Question 66

innervation of tongue muscles

Answer 66

CN XII (except palatoglossis m. -> CN X)

Question 67

innervation of palate muscles

Answer 67

CN X (except tensor veli palatini -> CN V-3)

Question 68

innervation of pharyngeal muscles

Answer 68

CN X (except stylopharyngeus m. -> CN IX)

Question 69

innervation of laryngeal muscles

Answer 69

CN X (all recurrent except cricothyroid m.)

Question 70

Innervation Tongue muscles: Palate muscles: Pharyngeal muscles: Laryngeal muscles:

Answer 70

Tongue muscles: CN XII (except palatoglossus m. -> CN X) Palate muscles: CN X (except tensor veli palatini -> CN V-3) Pharyngeal muscles: CN X (except stylopharyngeus m. -> CN IX) Laryngeal muscles: CN X (all recurrent except Cricothyroid m.)

Question 71

routes of infection from the oral cavity

Answer 71