13 - Oral & Nasal Cavities - Stephens

Question 0

where is the vestibule?

Answer 0

between the gums and the cheek

Question 1

what supplies blood to posterior 2/3 of nasal cavity?

Answer 1

sphenopalatine artery

Question 2

what nerve spirals around the submandibular duct? in what direction?

Answer 2

lingual n; superior lateral to inferior medial

Question 3

where is the sublingual gland located?

Answer 3

superior surface of mylohyoid m.

Question 4

what provides blood to sublingual gland?

Answer 4

sublingual branch of the lingual artery

Question 5

how is sublingual gland innervated?

Answer 5

autonomics, same as SM gland

Question 6

what will damage to the mylohyoid cause?

Answer 6

sagging of one side of the floor of the mouth (if unilateral)

Question 7

postganglionic sympathetic fibers to the sublingual gland travel thru what plexus?

Answer 7

facial or sublingual plexus*

Question 8

innervation of intrinsic muscles of tongue?

Answer 8

hypoglossal

Question 9

what does the sulcus terminalis divide?

Answer 9

ant 2/3 and post 1/3 tongue: ectoderm/endodermal origin

Question 10

m. of tongue not innervated by hypoglossal n?

Answer 10

platoglossus

Question 11

what are the symptoms of unilateral hypoglossal palsy?

Answer 11

paralysis, atrophy, and fasciulations of intrinsic m. of tongue; genoglossus m. will deviate tongue toward effected side “lick your wounds”

Question 12

what does bilateral hypoglossal palsy present as?

Answer 12

dyspnea, dysarthria, dysphagia

Question 13

where does all lymph of head and neck drain into?

Answer 13

deep cervical LN

Question 14

what supplies blood to tongue?

Answer 14

lingual artery (and terminal branch: profunda lingual a.)

Question 15

what is the muscularis uvulae innervated by?

Answer 15

X from pharyngeal plexus

Question 16

what innervates the tensor palati?

Answer 16

small branch of mandibular n (V3)

Question 17

function of tensor veli palatini?

Answer 17

tenses soft palate and opens auditory tube

Question 18

what innervates the levator veli palatini?

Answer 18

vagus n.

Question 20

function of levator palatini?

Answer 20

elevates the palate…. :)

Question 21

what happens when there is paralysis of the tensor or levator palate?

Answer 21

allows non-paralyzed side to pull or deviate uvula towards the normal side

Question 22

what do the greater palatine vessels supply?

Answer 22

post-incisive hard palate

Question 23

what do the lesser palatine vessels supply?

Answer 23

soft palate

Question 24

what supplies blood to the palatine tonsil?

Answer 24

the palatine branch of the ascending pharyngeal a.

Question 25

what nerve is closely associated with the floor of the tonsillar fossa?

Answer 25

glossopharyngeal n.

Question 26

where to fractures of the nose frequently occur?

Answer 26

junction between septal cartilage and the ethmoid and vomer bones

Question 27

what direction to cartilaginous fragments tend to move (telescope) in nose fracture?

Answer 27

posteriorly

Question 28

what portion of the nasal cavity is lined with hairs?

Answer 28

vestibule

Question 29

what portion of the nasal cavity has passive drainage?

Answer 29

anterior 1/3; posterior 2/3 is active

Question 30

which conchae condition air with swell bodies?

Answer 30

middle and inferior

Question 31

where are the swell bodies (histo)?

Answer 31

in the lamina propria

Question 32

what is the ethmoidal bulla?

Answer 32

bony eminence overlying middle ethmoidal air cells (multiple openings onto it)

Question 33

what does the hiatus semilunaris have in it?

Answer 33

opening for maxillary sinus in posterior 1/3 (onto inferior concha)

Question 34

where do the frontal and ethmoidal sinuses drain?

Answer 34

ethmoidal infundibulum

Question 35

where is the nasolacrimal duct located?

Answer 35

inferior meatus; 1cm posterior to anterior edge of concha

Question 36

what is Kiesselbach’s area? why is it important?

Answer 36

junction of septal branches of superior labial and sphenopalatine arteries; majority of nasal hemorrhages or (epitaxis) occur here

Question 37

what provides blood to anterior 1/3 of nasal cavity?

Answer 37

anterior ethmoidal artery

Question 38

what provides innervation to anterior 1/3 of nasal cavity?

Answer 38

anterior ethmoidal n.

Question 39

what provides innervation to posterior 2/3 of nasal cavity?

Answer 39

branches of spenopalatine ganglion

Question 40

what is superior to the sphenoidal sinus? inferior?

Answer 40

pituitary; nasopharynx

Question 41

what is posterior to sphenoidal sinus? anterior?

Answer 41

pons & basilar a.; nasal cavity

Question 42

what structures are lateral to the sphenoidal sinus?

Answer 42

internal carotid, V1, cavernous sinus