oral cavity

Question 1

what is the oral cavity

Answer 1

everything from the lips to the palatoglossal fold

Question 2

location of the labial artery and vein

Answer 2

just deep to orbicularis oris near margins

Question 3

why is the soft palate mobile

Answer 3

to aid in swallowing (no food, but still can breath

Question 4

what does the palatoglossal fold overly

Answer 4

palatoglossus muscle

Question 5

the portion of the soft palate that hangs down in the midline

Answer 5

uvula(made of the uvular muscle)

Question 6

what makes up the soft palate

Answer 6

muscles that interdigitate from either side

Question 7

what lies right under the palatal mucosa

Answer 7

palatine glands

Question 8

what muscles interdigitate in the soft palate

Answer 8

palatoglossus m
levator veli palatini m
palatopharyngeus m

Question 9

what creates the aponeurosis of the soft palate

Answer 9

tensor veli palatini m tendon that hooks under the pterygoid hamulus

Question 10

roll of tensor veli palatini m

Answer 10

provides tension to the soft palate so other muscles can move it

Question 11

whats more medial, levator veli palatini or tensor veli palatini m

Answer 11

levator veli palatini m

Question 12

palatini muscles are assocated with what plate

Answer 12

medial pyterygoid plate

Question 13

roll of levator veli palatini m

Answer 13

lift the soft palate

Question 14

the descending palatine a gives rise to

Answer 14

greater and lesser palatine aa

Question 15

where does the descending palatine a travel through

Answer 15

palatine canal

Question 16

what does the greater palatine a supply

Answer 16

anterior palate passing through greater palatine foramen

Question 17

what does the lesser palatine a supply

Answer 17

posterior palate passing through the lesser palatine foramen

Question 18

the ascending palatine artery branches from

Answer 18

facial a

Question 19

the palatine a braches from

Answer 19

ascending pharyngeal a

Question 20

what is the vascular supply of the palte

Answer 20

descing palatine artery (greater and lesser palatine)
ascending palatine
palatine a

Question 21

venous drainage of the palate

Answer 21

pterygoid and pharyngeal plexuses

Question 22

sensory and para and sympa innervation of the palate

Answer 22

nasopalatine nerve
greater palatine nerve
Lesser palatine

Question 23

mandibular n (CN V3) innervates what muscle of the palate

Answer 23

tesnor veli palatini

Question 24

Vagus n (CN X) innervates what muscle of the palate

Answer 24

levator veli palatini mm
Palatoglossus mm
palatopharyngeus mm
musculus uvula
Salpingopharyngeous mm (Via pharyngeal plexus)

Question 25

arteries for the palatine tonsils:

Answer 25

``` Tonsilar branches of: lesser palatine artery ascending pharygneal artery ascending palatine artery facial artery dosal lingual artery ```

Question 26

bleeding from tonsillectomy may result from

Answer 26

from arteries and paratonsillar veins

Question 27

what nerve may be damaged during a tonsillectomy

Answer 27

CN IX (lies on lateral pharyngeal wall)

Question 28

the epithelial change on the sublingual area

Answer 28

fimbriated fold

Question 29

the midline fold of the tounge

Answer 29

frenulum

Question 30

what overlies the sublingual gland under the tongue

Answer 30

sublingual fold

Question 31

the openings of the submandibular ducts

Answer 31

sublingual caruncles

Question 32

parts of the submandibular gland

Answer 32

intra and extra oral compents

Question 33

travel of the lingual nerve in realtion to the submandibular duct

Answer 33

comes in laterally goes under the duct comes up medially (Crosses 2x)

Question 34

what branch of trigeminal does the submandibular ganglion use

Answer 34

CN V3

Question 35

what does the Lingual N branch off

Answer 35

CN V3

Question 36

where does the LIngual N come from

Answer 36

between lat and medial pterygoid mm

Question 37

where does the submandibular ganglion get ists pre ganglionic fibers from

Answer 37

CN VII

Question 38

what all geos to submandiular ganglion

Answer 38

Lingual nerve from V3 Chorda tympani CN VII also preganglionic parasympa sympa fibers from external carotid plexus

Question 39

lesion of nerve after chorda tympani and lingual nerve come together leads to

Answer 39

loss of taste and general sensory (ant 2/3) | parasympathetics to submandibular and sublingual glands

Question 40

lesion of just corda tympani leads to

Answer 40

don't loose general senation

Question 41

location of submandibular ganglion

Answer 41

3rd molar, suspended from lingual n by 2 or more short n branches

Question 42

parasympa roll of submandibular ganglion

Answer 42

relays parasympa fibers from chorda tympani (CN VII) to travel to submandibular and sublingual galnds

Question 43

hypoglossal nerve serves

Answer 43

muscles of tongue

Question 44

location of the hypoglossal N (CN XII)

Answer 44

deep to posterior belly of digastric and stylohyoid mm anterior between submandibular gland and hyoglossus m inferior to lingual n superior to mylohyoid m

Question 45

where does the hypoglossal N end

Answer 45

posterior tongue to provide motor innervation

Question 46

travel of the glossopharyngeal N (CN XI)

Answer 46

lateral to stylopharyngeus m to enter pharynx beween superior and middle constrictor mm cont anteriorly thru tonsillar region

Question 47

roll of glossopharyngeal N (CN IX)

Answer 47

ends in posterior tongue to recieve sensory innervation

Question 48

connections of the styloglossus m

Answer 48

styloid process to tongue

Question 49

hyoglossus m connections

Answer 49

hyoid bone to tongue

Question 50

genioglossus m

Answer 50

genoid tubercle of mandible to tongue

Question 51

directions of the muscles of the tongue

Answer 51

superior longitudinal vertical transverse

Question 52

extrinsic muscles of the tongue

Answer 52

palatoglossus styloglossus hyoglossus genioglossus

Question 53

unilateral paralysis of CN XII leads to

Answer 53

can't protrcude straight

Question 54

bilateral paralysis of genioglossus m leads to

Answer 54

tongue falls back and may occlude airway

Question 55

what supplies most of the superficial structures of the oral cavity

Answer 55

Facial A

Question 56

what supplies most of the deep structures of the oral cavity

Answer 56

Lingual A

Question 57

3 branches of the lingual a to supply the tongue

Answer 57

dorsal lingual a deep lingual a sublingual a

Question 58

venous drainage of oral cavity

Answer 58

drain to IJV

Question 59

arteries in front of and behind the hypoglossal muscle

Answer 59

behind: dorsal lingual artery and vein infront: deep lingual artery and vein, sublingual artery and vein

Question 60

special sensory of tongue

Answer 60

``` Chorda tympani (CN VII): taste anterior 2/3 glossopharyngeal n (CN IX): post 1/3 Vagus( CN X): root of tongue and epiglottis ```

Question 61

what does the Chorda tympani n (CN VII) travel with

Answer 61

lingual n

Question 62

general sensory for tongue

Answer 62

``` Lingual N (CN V3): anterior 2/3 Glossopharyngeal N (CN IX): post 1/3 Vagus(CN X): root of tongue and epiglottis ```

Question 63

arterior supply of oral cavity

Answer 63

Anterior superior alveolar a middle superior alveolar a posterior superior alveolar a inferior alveolar a

Question 64

what oral cavity arteries are from maxillary a

Answer 64

posterior superior alveolar a | inferior alveolar a

Question 65

what oral cavity arteries are from infraorbital a

Answer 65

anterior superior alveolar a | middle superior alveolar a

Question 66

venous drainage of oral cavity

Answer 66

pterygoid pleuxes: internal-> retromandibular-> splits to common facal then IVC or to EJV superficial: facial vein then IVC