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DDS1-gross anatomy > nasal cavity > Flashcards

nasal cavity Flashcards

(69 cards)

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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
what drains into infundibulum
frontal sinus and anterior ethmoidal cells
26
where does middle ethmoidal cells drain into
ethmoidal bulla
27
where does posterior ethmoidal cells drain into
superior meatus
28
where does sphenoidal sinus drain into
spheno-ethmoidal recess
29
where does maxillary sinus drain into
semilunar hiatus
30
tears drain by what into what
tears drain through the nasolacrimal duct and into the inferior meatus
31
where does the nasolacrimal duct drain into
inferior meatus
32
function of olfactory nerve
special sensation (smell)
33
anterior ethmoidal nerve is a branch of what cn
Cn V1
34
anterior ethmoidal n supplies
skin of dorsum and ala of nose
35
does the posterior ethmoidal n supply the nasal cavity
nope
36
top and bottom parts of the nasal cavity are supplied by what cn
top: cn v1 bottom: cn v2
37
nasal nerves enter the nasal cavity by
the sphenopalatine foramen
38
posterior superior lateral nasal nn supply
lateral wall of nasal cavity
39
posterior superior medial nasal nn supply
- roof of nasal cavity | - nasal septum
40
nasopalatine n is a branch of
posterior superior medial nasal nn
41
nasopalatine n supplies
nasal branches: nasal septum | palatal branches: palatal mucosa and gingiva anterior to max canines
42
posterior inferior lateral nasal nn are branches of what
greater palatine n
43
posterior inferior lateral nasal nn supply
lateral and inferior wall of nasal cavity
44
internal nasal branch (of intra orbital n) supplies
skin of vestibule and movable part of the nasal septum
45
nasal branch of anterior superior alveolar n supplies
lateral wall near the anterior end of inferior concha
46
parasympathetic innervation of nasal cavity (to the glands)
pre: greater petrosal n (CN7) synapses: PP ganglion post: join branches of CN V-2
47
sympathetic innervation of nasal cavity
- post: superior cervical ganglion (T1) - ICA - deep petrosal n - joins greater petrosal to make nerve of the pterygoid canal
48
what innervates frontal sinuses
supraorbital n (CN V1)
49
what innervates ethmoidal cells
- anterior and posterior ethmoidal nn (from nasocillary n -- branch of CNV1) - orbital branches from PP ganglion (max n)
50
what innervates maxillary sinus
posterior, middle, and anterior superior alveolar nn (max n)
51
what innervates sphenoidal sinus
- posterior ethmoidal n (CN V1) | - orbital branches of PP ganglion (max n)
52
sphenopalatine a is companion with what n
nasal branches (PSL and PSM nn)
53
sphenopalatine a is a branch of
maxillary a
54
sphenopalatine a passes through
sphenopalatine foramen
55
branches of sphenopalatine a
- Posterior lateral nasal branches | - posterior septal branches (branches into nasopalatine a)
56
posterior lateral nasal branches supply
most of the lateral wall of nasal cavity
57
nasopalatine a (branch of posterior septal branches) supplies
palatal gingiva and mucosa from central incisor to canine
58
branches of facial a
- superior labial a | - lateral nasal a
59
septal branch (superior labial a) of facial a supplies
anterior nasal septum
60
lateral nasal branch of facial a supplies
dorsum, ala, and nasal vestibule
61
anterior and posterior ethmoidal aa branch from
ophthlamic a
62
veins of the nasal cavity drain into
pterygoid plexus in IT fossa
63
veins of anterior-inferior regions of nasal cavity drain into
facial vein
64
superior nasal cavity veins may also drain into
superior saggital sinus via foramen cecum
65
anterior and posterior ethmoidal veins drain into
cavernous sinus via superior orbital v
66
blood supply to frontal sinus
anterior ethmoidal a
67
blood supply to ethmoidal cells
anterior and posterior ethmoidal a
68
blood supply to maxillary sinus
posterior and anterior superior alveolar a (NOT MIDDLE)
69
blood supply to sphenoidal sinus
posterior ethmoidal a | -PHARYNGEAL A

DDS1-gross anatomy (39 decks)

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