13 - Oral & Nasal Cavities - Stephens Flashcards

0
Q

where is the vestibule?

A

between the gums and the cheek

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1
Q

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

A

sphenopalatine artery

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2
Q

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

A

lingual n; superior lateral to inferior medial

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3
Q

where is the sublingual gland located?

A

superior surface of mylohyoid m.

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4
Q

what provides blood to sublingual gland?

A

sublingual branch of the lingual artery

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5
Q

how is sublingual gland innervated?

A

autonomics, same as SM gland

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6
Q

what will damage to the mylohyoid cause?

A

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

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7
Q

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

A

facial or sublingual plexus*

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8
Q

innervation of intrinsic muscles of tongue?

A

hypoglossal

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9
Q

what does the sulcus terminalis divide?

A

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

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10
Q

m. of tongue not innervated by hypoglossal n?

A

platoglossus

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11
Q

what are the symptoms of unilateral hypoglossal palsy?

A

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

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12
Q

what does bilateral hypoglossal palsy present as?

A

dyspnea, dysarthria, dysphagia

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13
Q

where does all lymph of head and neck drain into?

A

deep cervical LN

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14
Q

what supplies blood to tongue?

A

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

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15
Q

what is the muscularis uvulae innervated by?

A

X from pharyngeal plexus

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16
Q

what innervates the tensor palati?

A

small branch of mandibular n (V3)

17
Q

function of tensor veli palatini?

A

tenses soft palate and opens auditory tube

18
Q

what innervates the levator veli palatini?

A

vagus n.

20
Q

function of levator palatini?

A

elevates the palate…. :)

21
Q

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

A

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

22
Q

what do the greater palatine vessels supply?

A

post-incisive hard palate

23
Q

what do the lesser palatine vessels supply?

A

soft palate

24
Q

what supplies blood to the palatine tonsil?

A

the palatine branch of the ascending pharyngeal a.

25
Q

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

A

glossopharyngeal n.

26
Q

where to fractures of the nose frequently occur?

A

junction between septal cartilage and the ethmoid and vomer bones

27
Q

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

A

posteriorly

28
Q

what portion of the nasal cavity is lined with hairs?

A

vestibule

29
Q

what portion of the nasal cavity has passive drainage?

A

anterior 1/3; posterior 2/3 is active

30
Q

which conchae condition air with swell bodies?

A

middle and inferior

31
Q

where are the swell bodies (histo)?

A

in the lamina propria

32
Q

what is the ethmoidal bulla?

A

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

33
Q

what does the hiatus semilunaris have in it?

A

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

34
Q

where do the frontal and ethmoidal sinuses drain?

A

ethmoidal infundibulum

35
Q

where is the nasolacrimal duct located?

A

inferior meatus; 1cm posterior to anterior edge of concha

36
Q

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

A

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

37
Q

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

A

anterior ethmoidal artery

38
Q

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

A

anterior ethmoidal n.

39
Q

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

A

branches of spenopalatine ganglion

40
Q

what is superior to the sphenoidal sinus? inferior?

A

pituitary; nasopharynx

41
Q

what is posterior to sphenoidal sinus? anterior?

A

pons & basilar a.; nasal cavity

42
Q

what structures are lateral to the sphenoidal sinus?

A

internal carotid, V1, cavernous sinus