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DDS1-gross anatomy > nasal cavity > Flashcards

nasal cavity Flashcards

1
Q

what divides the right and left compartments of the nasal cavity

A

nasal septum

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2
Q

anterior apertures

A

nares / nostrils

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3
Q

posterior apertures

A

choanae

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4
Q

lateral boundaries of nostrils

A

alae (wings)

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5
Q

what combine to form the nasal septum

A

perpendicular plate of ethmoid bone, vomer, septal cartilage

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6
Q

what types of tissue is the nose made up of

A

cartilage and fibroareolar tissue

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7
Q

nasal vestibules

A

small space internal to the nares

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8
Q

3 regions of the nasal cavity

A
  1. nasal vestibules
  2. respiratory region
  3. olfactory region
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9
Q

function of respiratory region

A

warm and moisten air passing over the area

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10
Q

what separates the nasal cavity superiorly from the anterior cranial fossa

A

cribriform plate

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11
Q

what extends from the olfactory bulb through the cribriform plates

A

olfactory nerve fibers

-innervate the mucosa of the roof of the nasal cavity

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12
Q

partition between mouth and nose

A

hard palate

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13
Q

what lies posterior to nasal cavity

A

nasopharynx

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14
Q

what is lateral to nasal cavity

A

upper half: ethmoidal air cells

lower half: maxillary sinuses

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15
Q

anterior 2/3 of nasal cavity

A

palatine process of MAXILLA

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16
Q

posterior 1/3 of nasal cavity

A

horizontal plate of PALATINE

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17
Q

3 bones that articulate with nasal cavity at the roof

A

frontal
ethmoid
sphenoid

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18
Q

what makes up the nasal septum

A

ethmoid, vomer, and cartilage

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19
Q

function of conchae

A

increase SA of contact between tissues of lateral wall and respired air for HEAT EXCHANGE

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20
Q

largest concha

A

inferior conchae

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21
Q

4 air channels in the nasal cavity

A
  • spheno-ethmoidal recess
  • superior meatus
  • middle meatus
  • inferior meatus
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22
Q

maxillary sinus boundaries

A

roof: floor of orbit
floor: alveolar process of maxilla
base: lateral wall of nose
apex: zygomatic bone
posterior wall: infratemporal fossa

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23
Q

what lies superior to sphenoidal sinus

A

cranial cavity (pituitary gland and optic chiasm)

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24
Q

what lies lateral to sphenoidal sinus

A

cranial cavity (cavernous sinus)

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25
Q

what drains into infundibulum

A

frontal sinus and anterior ethmoidal cells

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26
Q

where does middle ethmoidal cells drain into

A

ethmoidal bulla

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27
Q

where does posterior ethmoidal cells drain into

A

superior meatus

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28
Q

where does sphenoidal sinus drain into

A

spheno-ethmoidal recess

29
Q

where does maxillary sinus drain into

A

semilunar hiatus

30
Q

tears drain by what into what

A

tears drain through the nasolacrimal duct and into the inferior meatus

31
Q

where does the nasolacrimal duct drain into

A

inferior meatus

32
Q

function of olfactory nerve

A

special sensation (smell)

33
Q

anterior ethmoidal nerve is a branch of what cn

A

Cn V1

34
Q

anterior ethmoidal n supplies

A

skin of dorsum and ala of nose

35
Q

does the posterior ethmoidal n supply the nasal cavity

A

nope

36
Q

top and bottom parts of the nasal cavity are supplied by what cn

A

top: cn v1
bottom: cn v2

37
Q

nasal nerves enter the nasal cavity by

A

the sphenopalatine foramen

38
Q

posterior superior lateral nasal nn supply

A

lateral wall of nasal cavity

39
Q

posterior superior medial nasal nn supply

A
  • roof of nasal cavity

- nasal septum

40
Q

nasopalatine n is a branch of

A

posterior superior medial nasal nn

41
Q

nasopalatine n supplies

A

nasal branches: nasal septum

palatal branches: palatal mucosa and gingiva anterior to max canines

42
Q

posterior inferior lateral nasal nn are branches of what

A

greater palatine n

43
Q

posterior inferior lateral nasal nn supply

A

lateral and inferior wall of nasal cavity

44
Q

internal nasal branch (of intra orbital n) supplies

A

skin of vestibule and movable part of the nasal septum

45
Q

nasal branch of anterior superior alveolar n supplies

A

lateral wall near the anterior end of inferior concha

46
Q

parasympathetic innervation of nasal cavity (to the glands)

A

pre: greater petrosal n (CN7)
synapses: PP ganglion
post: join branches of CN V-2

47
Q

sympathetic innervation of nasal cavity

A
  • post: superior cervical ganglion (T1)
  • ICA
  • deep petrosal n
  • joins greater petrosal to make nerve of the pterygoid canal
48
Q

what innervates frontal sinuses

A

supraorbital n (CN V1)

49
Q

what innervates ethmoidal cells

A
  • anterior and posterior ethmoidal nn (from nasocillary n – branch of CNV1)
  • orbital branches from PP ganglion (max n)
50
Q

what innervates maxillary sinus

A

posterior, middle, and anterior superior alveolar nn (max n)

51
Q

what innervates sphenoidal sinus

A
  • posterior ethmoidal n (CN V1)

- orbital branches of PP ganglion (max n)

52
Q

sphenopalatine a is companion with what n

A

nasal branches (PSL and PSM nn)

53
Q

sphenopalatine a is a branch of

A

maxillary a

54
Q

sphenopalatine a passes through

A

sphenopalatine foramen

55
Q

branches of sphenopalatine a

A
  • Posterior lateral nasal branches

- posterior septal branches (branches into nasopalatine a)

56
Q

posterior lateral nasal branches supply

A

most of the lateral wall of nasal cavity

57
Q

nasopalatine a (branch of posterior septal branches) supplies

A

palatal gingiva and mucosa from central incisor to canine

58
Q

branches of facial a

A
  • superior labial a

- lateral nasal a

59
Q

septal branch (superior labial a) of facial a supplies

A

anterior nasal septum

60
Q

lateral nasal branch of facial a supplies

A

dorsum, ala, and nasal vestibule

61
Q

anterior and posterior ethmoidal aa branch from

A

ophthlamic a

62
Q

veins of the nasal cavity drain into

A

pterygoid plexus in IT fossa

63
Q

veins of anterior-inferior regions of nasal cavity drain into

A

facial vein

64
Q

superior nasal cavity veins may also drain into

A

superior saggital sinus via foramen cecum

65
Q

anterior and posterior ethmoidal veins drain into

A

cavernous sinus via superior orbital v

66
Q

blood supply to frontal sinus

A

anterior ethmoidal a

67
Q

blood supply to ethmoidal cells

A

anterior and posterior ethmoidal a

68
Q

blood supply to maxillary sinus

A

posterior and anterior superior alveolar a (NOT MIDDLE)

69
Q

blood supply to sphenoidal sinus

A

posterior ethmoidal a

-PHARYNGEAL A

DDS1-gross anatomy (39 decks)

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