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Neuro III > Nasal paranasal sinuses > Flashcards

Nasal paranasal sinuses Flashcards

(58 cards)

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1
Q

what is the function of the nose

A

warm, humidify and filter air as it passes into respiratory tract

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2
Q

Where are the paranasal sinuses

A

inside frontal, sphenoidal, ethmoidal and maxillary bones

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3
Q

when do the paranasal sinuses form

A

post-natally

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4
Q

What are the borders of the maxillary sinus

A 
superior- orbit
medial- nasal cavity
inferior- maxillary teeth
anterior/lateral is the cheek
posterior is the pterygopalatine fossa
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5
Q

where does the maxillary sinus drain to

A

semilunar hiatus with middle nasal meatus

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6
Q

what inn maxillary sinus

A

V2

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7
Q

what are the borders of frontal sinus

A

superior/posterior- cranial cavity

inferior- nasal cavity/orbit

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8
Q

what inn the frontal sinus

A

V1

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9
Q

where does the frontal sinus drain to

A

frontonasal duct to semilunar hiatus within middle meatus

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10
Q

what are the borders of the sphenoidal sinus

A

superior- cranial cavity
lateral- cavernouse sinus/cranial cavity
anterior/inferior- nasopharynx/nasal cavity

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11
Q

Whatt inn the sphenoidal sinus

A

V2

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12
Q

where does the sphenoid sinus drain to

A

sphenoethmoidal recess

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13
Q

What are the borders of the ehtmoidal sinuses

A

superior- cranial cavity
medial/inferior- nasal cavity
lateral orbit

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14
Q

what are the drainage pathways of the ethmoidal sinuses

A

semilunar hiatus of middle nasal meatus
ethmoid bulla
superior nasal meatus

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15
Q

what inn ethmoidal sinuses

A

V1

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16
Q

What can be used to detect fluid levels in paranasal sinuses

A

transillumination

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17
Q

how can sinusitis lead to optic neuritis

A

spreading of the inflammation

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18
Q

how come the maxillary sinus is most susceptive to infection

A

becuase the ostia where fluid can drain are located at the top so has to fill up to drain

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19
Q

What are the boundaries of the nasal cavity roofs

A

ethmoid bone (cribiform)
frontal bone
sphenoid bone

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20
Q

what are the boundaries of the lateral wall of nasal cavity

A 
ethmoid bone- superior and middle concha
inferior concha
maxilla bone
palatine bone- perpendicular plate
lacrimal bone
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21
Q

what are the boundaries of the floor of the nasal cavtiy

A

palatine bone

maxilla bone

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22
Q

what are teh boundaries of the anterior wall of the nasal cavity

A

nasal cartilages, nasal bones
nares are the anterior openings to the nasal cavity
lead to skin lined vestibule which has vibrissae, hair cells which filter air

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23
Q

what is the posterior border of the nasal cavitites

A

open to nasopharynx via choanae

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24
Q

what are the borders of the medial wall of the nasal cavity

Study These Flashcards
A

perpendicular plate of ethmoid
vomer
nasal cartilages

25
What is rhinitis
inflammation of nasal mucosa
26
Infection in the nasal cavity can spread where
``` anterior cranial fossa via cribiform nasopharynx middle ear via pharyngotympanic tube lacrimal apparatus and conjunctiva via nasolacrimal duct paranasal sinuses ```
27
where are the meatuses in nasal cavity
sphenoethmoidal recess | superior middle and inferior meatus
28
Where is the sphenoethmoigal recess and what is it an opening for
posterior and superior to the superior concha | opening for sphenoidal sinu
29
where is the superior meatus and what is it an opening for
under the superior concha | opening for posteiror ethmoidal sinus
30
where is the middle meatus and what is it an opening for
below middle concha has bulla ehtmoidalis and semilunar hiatus opening for frontal, maxillary, anterior and middle ethmoidal sinuses
31
where is the inferior meatus and what is it an opening for
below inferior concha | opening for nasolacrimal duct
32
The sphenoid sinus drains to what sinus
spehnoethmoidal recess
33
how does the frontal sinus drain
frontonasal duct to semilunar hiatus within middle nasal meatus
34
where does the maxillary sinus drain to
semilunar hiatus within middle nasal meatus
35
where do the ehtmoidal air cells drain
anterior to semilunar hiatus in middle nasal meatus middle to ethmoid bulla posterior to superior nasal meatus
36
where does the nasolacrimal duct drain to
lacrimal fluid to inferior nasal meatus
37
Describe blood supply to anterior and posterior ethmoidal sinuses
branches of ophthalmic course through ethmoidal air cells to enter roof nasal cavity lateral nasal and septal branches also
38
What aa supply sinuses from external carotid
spehnopalatine, greater palatine and facial
39
describe sphenopalatine a
terminal branch of maxillary enter nasal cavity posteriorly via sphenopalatine foramen gives posterior lateral nasal and septal barnches
40
describe greater palatine a
branch of maxillary enters nasal cavity via incisive canal nasal septal branches
41
describe facial a
fives septal branches from superior labial a
42
What is the Kiesselbach area
the anastomoses of greater palatine, anterior ethmoidal and sphenopalatine, facial aa on anterior nasal septum
43
describe vv drainage
submucosal venous plexus drains to maxillary, facial and opthalmic vv
44
Describe the CN I
SVA olfaction bipolar cells are in the superior portion of nasal cavity epithelium fibers of CN I go thru cribiform plate and synapse in olfactory bulb of brain
45
The olfactory bulb is an extension ofr what part of the developing CNS
forebrain, telencephalon
46
What are the branches of opthalmic V1 that inn sinus areas
supraorbital, supratrochlear- frontal posteior ethmoidal anteiror ethmoidal
47
what are the branches of anterior ethmoidal n
branches to ethmoidal air cells septal branches to anterior nasal cavity lateral branches to anterior lateral wall of nasal cavity external nasal branch of dorsum of nose
48
What sinus areas are supplied by maxillary n V2
GSA to nasal cavity, maxillary sinus and sphenoid sinus
49
What are the branches of Maxillary n
``` infraorbital posterior superior alveolar pharyngeal nasopalatine posterior superior lateral nasal n posterior inferior lateral nasal n ```
50
describe the infraorbital n
inn maxillary sinus | supplies inn to face and lateral nose
51
describe posterior superior alveolar n
maxillary sinus
52
describe pharyngeal n
thru floor/medial wall of sphenoid sinus | provides sphenoid sinus
53
describe nasopalatine sinus
enters nasal cavity via sphenopalatine foramen and will provide majority inn to nasal septum continues to hard plate via incisive foramen
54
describe the posterior superior lateral nasal n
enter nasal cavity via sphenopalatine foramen | inn to superior lateral nasal wall
55
describe posterior inferior lateral nasal n
enters nasal cavity via unnamed foramen | inn to inferior lateral nasal wall
56
Describe the PANs of nasal cavities
preganglionic cell bodies in salivatory nucleus, fiber go with VII (greater petrosal, n of pterygoid canal) to postganaglionic cell bodies in the pterygopalatine ganglion to travel out via V2 and be distributed
57
describe SANs of nasal cavities
preganglionic cell bodies T1-T4 postganglionic cell bodies in superior cervical ganglion postganaglionic fibers for internal carotid n (deep petrosal) which joins greater to for n of pterygoid canal and then distributed via V2
58
Describe lymph drainage of nasal cavities
anterior to face and submandibular nodes | Posterior from pharynx to retropharyngeal lymph nodes

Neuro III (10 decks)

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