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Neuro Exam 3 > Nasal Cavity > Flashcards

Nasal Cavity Flashcards

1
Q

paranasal sinuses

A

frontal
sphenoid
ethmoid
maxilla

form post-natally - epithelial lined

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2
Q

maxillary sinuses

A

largest sinus

drains to middle meatus

  • only one draining up**
  • susceptible to infection

nerve - V2

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3
Q

frontal sinus

A

between cranial and nasal cavities

frontonasal duct to semilunar hiatus in middle meatus

nerve - V1

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4
Q

semilunar hiatus

A

in middle nasal meatus

drainage from maxillary and frontal sinuses and anterior ethmoid air cells

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5
Q

sphenoidal sinus

A

opens to sphenoethmoidal recess

nerve - V2

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6
Q

ethmoidal sinus

A

anterior, middle, posterior air cells

nerve V1

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7
Q

drainage of anterior ethmoid air cells

A

semilunar hiatus - middle nasal meatus

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8
Q

drainage of middle ethmoid air cells

A

ethmoid bulla

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9
Q

drainage of posterior air cells

A

superior nasal meatus

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10
Q

sinusitis

A

inflammation
transillumination to detect fluid

infections can spread

**maxillary most suspeceptible

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11
Q

maxillary teeth infection

A

to maxillary sinus

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12
Q

nares

A

external openings of nose

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13
Q

external nose

A

bone and cartilage

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14
Q

roof of nasal cavity

A

mainly ethmoid - cribriform plate
frontal
sphenoid

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15
Q

lateral wall of nasal cavity

A 
ethmoid - superior and middle concha
inferior concha
maxilla
palatine - perp plate
lacrimal bone
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16
Q

concha bones?

A

superior and middle - ethmoid

inferior - its own bone

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17
Q

floor of nasal cavity

A

palatine bone

maxilla bone

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18
Q

anterior wall nasal cavity

A

nasal cartilages, nasal bones

nares

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19
Q

posterio wall of nasal cavity

A

open to nasopharynx via choanae

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20
Q

choanae

A

open to nasopharynx from nasal cavity

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21
Q

medial wall nasal cavity

A

nasal septum

  • perpendicular plate ethmoid
  • vomer
  • nasal cartilage
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22
Q

deviated septum

A

can affect breathing

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23
Q

nasal mucosa

A

lines bulk of cavity
-rich in blood vessels and mucous glands to warm air

olfactory epithelium lines superoposterior part of cavity
-CN I

24
Q

rhinitis

A

inflammation of nasal mucosa

infection spread:

  • anterior cranial fossa via cribriform
  • nasopharynx
  • middle ear via pharyngotympanic tube
  • lacrimal apparatus and conjuctiva via nasolacrimal duct
  • paranasal sinuses
25
Q

sphenoethmoidal recess

A

area posterior and superior to superior concha

-opening for sphenoid sinus

26
Q

superior nasal meatus

A

beneath superior concha

-opening for posterior ethmoidal sinus

27
Q

middle nasal meatus

A

beneath middle concha

  • bulla ethmoidalis and semilunar hiatus
  • opening for frontal, maxillar, A/M ethmoidal air cells

middle ethmoid - ethmoidalis bulla

28
Q

inferior nasal meatus

A

beneath inferior concha

-openings for nasolacrimal duct

29
Q

frontal sinus drainage

A

frontonasal duct
semilunar hiatus
middle nasal meatus

30
Q

maxillary sinus drainage

A

semilunar hiatus

middle nasal meatus

31
Q

anterior ethmoid air cell drainage

A

semilunar hiatus

middle nasal meatus

32
Q

middle ethmoid air cell drainage

A

ethmoid bulla

middle nasal meatus

33
Q

posterior ethmoid air cell drainage

A

superior nasal meatus

34
Q

nasolacrimal duct drainage

A

inferior nasal meatus

35
Q

blood supply from internal carotid a

A

anterior and posterior ethmoidal arteries

-branches of opthalmic a

36
Q

blood supply from external carotid a

A

sphenopalatine a
greater palatine a
facial a

37
Q

kisselbach area

A

anastomose between:

  • greater palatine a
  • anterior ethmoidal a
  • sphenopalatine a
  • facial a

NO POSTERIOR ETHMOIDAL**

anterior portion of nasal septum
-compress here to stop nose bleed

38
Q

major artery to nasal cavity

A

sphenopalatine a

chronic nosebleeds involve this often**

39
Q

olfactory nerve

A

SVA CN I

bipolar neurons in superior nasal cavity epithelium

neuron processes through cribriform plate
-synapse olfactory bulb

40
Q

olfactory bulb

A

extension of forebrain (telencephalon)

-CN I synapse directly with forebrain**

41
Q

ophthalmic nerve

A

V1 - GSA to nose and sinuses
branch of trigeminal

enters orbit via superior orbital fissure

42
Q

branches of ophthalmic nerve

A

supraorbital n
supratrochlear n.
posterior ethmoidal n.
anterior ethmoidal n.

43
Q

nerve to frontal sinus

A

V1 - supraorbital and supratrochlear

44
Q

ethmoid sinus nerve

A

posterior ethmoidal n

45
Q

anterior ethmoidal n

A

provides:

  • branches to ethmoidal air cells
  • septal branches
  • lateral branch nasal cavity
  • external nasal branch - dorsum of nose
46
Q

maxillary nerve

A

V2 - branch of trigeminal

enters PPF via pterygopalatine fossa
-GSA to nose and sinuses

47
Q

branches of V2

A 
infraobribal
posterior superior alveolar
nasopalatine
posterior superior lateral nasal
posterior inferior lateral nasal
48
Q

majority of innervation to nasal septum

A

nasopalatine n

49
Q

maxillary sinus nerve

A

infraorbital
-via V2

also to face and lateral nose

50
Q

maxilalry sinus nerve

A

posterior superior alveolar n

-via V2

51
Q

superior lateral nasal wall nerve

A

posterior superior lateral nasal n

52
Q

posterior inferior lateral nasal wall nerve

A

posterior inferior lateral nasal n

53
Q

parasympathetic to paranasal sinuses

A

preganglionic - salivatory nucleus
travel with CN VII - greater petrosal branch

  • joins deep petrosal nerve
  • form nerve to pterygoid canal

synapse at PPG
-postganglionic with V2 > nasal cavities and sinuses

54
Q

sympathetics to paranasal sinuses

A

preganglionic T1 - 4

postganglionic SCG
-fibers with internal carotid n > deep petrosal n

with greater petrosal nerve
-form nerve to pterygoid canal

  • synapse at PPG
  • postganglionic with V2 > nasal cavities and sinuses
55
Q

lymph drainage of nasal cavities

A

anterior portion - submandibular nodes

posterior portion - retropharyngeal nodes

Neuro Exam 3 (15 decks)

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