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Neuroendocrine > 9. Pterygopalatine Fossa and Nasal Cavity > Flashcards

9. Pterygopalatine Fossa and Nasal Cavity Flashcards

1
Q

bony parts of the nose

A
  • nasal bones
  • frontal process of maxill
  • anasal part of frontal bone and nasal spine
  • bony part of the nasal septum
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2
Q

cartilagenous parts of the nose

A
  • 2 lateral cartilages
  • 2 alar cartilages
  • septa cartilage (nasal septum)
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3
Q

Identify parts of the external nose.

A
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4
Q

bones of the nasal cavity

A
  • nasal
  • maxillary
  • palatine
  • ethmoid
  • vomer
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5
Q

Identify the nasal cavity bones.

A
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6
Q

Idenfity the nasal cavity bones (deep).

A
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7
Q

All of the nasal cavity is lined with nasal mucosa except for _____.

A

vestible of the nose (external)

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8
Q

Nasal mucosa is firmly connected to ____.

A
  • periosteum of bony parts of nasal cavity
  • perichondrium of cartilagenous nasal components
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9
Q

areas lined by nasal mucosa

A
  • respiratory area: inferior 2/3
  • olfactory area: superior 1/3
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10
Q

What contains the peripheral nerve endings from olfactory nerve (CN I) for olfaction?

A

olfactory mucosa

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11
Q

Identify these structures.

A
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12
Q

boundaries of the nasal cavity

A
  • roof = frontal b., ethmoid b., sphenoid b.
  • floor = palatine process of maxilla, horizontal plate of palatine bone
  • medial wall = nasal septum*
  • lateral wall = superior, middle, and inferior nasal conchae
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13
Q

components of the nasal septum

A
  • perpendibular plate of ethmoid b.
  • vomer
  • septal cartilage
  • nasal crests of maxillary and palatine bones
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14
Q

divisions of the nasal cavity

A
  • spheno-ethmoidal recess
  • superior nasal meatus
  • middle nasal meatus
  • inferior nasal meatus
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15
Q

opening of the sphenoid sinus

A

spheno-ethmoidal recess

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16
Q

opening of ethmoidal sinuses

A

superior nasal meatus

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17
Q

opening of frontal sinus

A

middle nasal meatus

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18
Q

Where does the maxillary sinus open into?

A

maxilalry sinus opens into the middle nasal meatus (posterior part of the semilunar hiatus at the maxillary osteum)

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19
Q

opening of the nasolacrimal duct

A

inferior nasal meatus

20
Q

arterial supply to the lateral and medial walls of the nasal cavity

A

branches of the maxillary artery and ​facial artery

21
Q

branches of the maxillary artery (supply to nasal cavity)

A
  • sphenopalatine a.
  • anterior and posterior ethmoidal a.
  • greater palatine a.
22
Q

branches of the facial artery (supply to the nasal cavity)

A
  • superior labial a.
  • lateral nasal branches
23
Q

area where all 5 arteries of the nasal cavity come together

A

Kiesselbach area

24
Q

venous drainage of the nasal cavity

A
  • sphenopalatine v.
  • facial v.
  • ophthalmic v.
25
Q
  • largest paranasal sinus
  • drains via maxillary ostium into the middle meatus
  • arterial supply: superior alveolar branches of maxillary a. & greater palatine a.
  • innervation: superior alveolar n. branches (V2)
A

maxillary sinus

26
Q
  • ethmoid air cells located b/w orbits
  • anterior and middle ethmoidal cells drain into middle meatus
  • posterior ethmoidal cells drain into superior meatus
  • arterial supply = ethmoidal arteries
  • innervation = nasociliary nerves (CN V1)
A

ethmoid sinus

27
Q
  • unevenly divided by bony part of nasal septum
  • drains via spheno-etmoidal recess
  • arterial supply = posterior ethmoidal a.
  • innervation = posterior ethmoidal n. (V1)
A

sphenoid sinus

28
Q
  • b/w outer and innter tables of frontal bone (posterior to superciliary arches)
  • drains via frontonasal duct into semilunar hiatus of middle meatus
  • arterial supply = supraorbital a. ad anterior ethmidal a.
  • innervation = supraorbital nerves (CN V1)
A

frontal sinus

29
Q

which sinus is innervated by branches from the maxillary divison of the trigeminal nerve (V2)?

A

maxillary sinus

30
Q

small pyramid-shaped space found inferior to the apex of the orbit

A

pterygopalatine fossa

31
Q

borders of the pterygopalatine fossa

A
  • anterior: maxillary tuberosity
  • posterior: pterygoid process of the sphenoid (lateral plate)
  • medial: perpendicular plate of the palatine bone
  • lateral: opens into infratemporal fossa via pterygomaxillary fissure
  • roof: (incomplete) greater wing of sphenoid b.
  • floor: pyramidal process of palatine b.
32
Q

openings of the pterygopalatine fossa

A
  • superior: opens into inferior orbital fissure
  • inferior: closed except palatine foramen
33
Q

contents of the pterygopalatine fossa

A
  • maxillary nerve (CN V2)
  • pterygopalatine ganglion
  • 3rd part of the maxillary artery
34
Q

trace distribution of maxillary nerve within the pterygopalatine fossa

A
35
Q

Where are parasympathetic fibers to the pterygopalatine ganglion from?

A

greater petrosal nerve (CN VII)

36
Q

What forms the nerve of the pterygoid canal (vidian n.)?

A

greater petrosal nerve (parasympathetic) + deep petrosal nerve (sympathetic)

37
Q

Parasympathetic fibers from the greater petrosal nerve supply ____.

A

pterygopalatine ganglion

38
Q

The deep petrosal nerve arises from ____.

A

internal carotid plexus

39
Q

What does the deep petrosal nerve convey?

A

postsynaptic sympathetic fibers (join branches of the maxillary n. via pterygopalatine ganglion)

DOES. NOT. SYNAPSE.

40
Q

Where are presynaptic sympathetic fibers from?

A

superior cervical ganglion

41
Q

nervous structures of the pterygopalatine fossa

A
42
Q

arteries of the pterygopalatient fossa

A

all arteries of the pterygopalatine fossa are from the maxillary artery

[note: don’t confuse with the arterial supply to the nasal cavity, which has supply from maxillary & facial]

43
Q

parts of the pterygopalatien fossa

A
  • mandibular part
  • pterygoid part
  • pterygopalatine part
44
Q

branches of the maxillary nerve (CN V2)

A
45
Q

branches of the mandibular nerve (CN V3)

A

Neuroendocrine (30 decks)

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