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Head and neck radiology > Sinonasal > Flashcards

Sinonasal Flashcards

1
Q

Roof of nasal cavity

A

Cribriform plate

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2
Q

Floor of nasal cavity

A

Hard and soft palate

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3
Q

Lateral wall of nasal cavity

A

Lateral nasal wall with attached turbinates

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4
Q

Postero-superior nasal bony septum

A

Perpendicular plate of ethmoid

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5
Q

Postero-inferior nasal bony septum

A

Vomer

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6
Q

Superior attachment of middle turbinate to cribriform plate

A

Vertical lamella

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7
Q

Posterior and lateral attachment of middle turbinate to lamina papyracea

A

Via basal lamella

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8
Q

Superior meatus recieves drainage from

A

Posterior ethmoid cells at sphenoethmoidal recess

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9
Q

Positioned at superior aspect of ostiomeatal complex and recieves drainage from anterior ethmoid air cells

Also protrudes inferomedially into infundibulum or hiatus semilunaris

A

Ethmoid bulla

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10
Q

Between uncinate process and ethmoid bulla, receives drainage from anterior ethmoid air cells and maxillary sinus via infundibulum

A

Hiatus semilunaris

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11
Q

Inferior meatus receives drainage from

A

nasolacrimal duct anteriorly

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12
Q

Ethmoid sinus is separated into anterior and posterior parts by

A

Basal lamella

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13
Q

Maxillary sinus drain into

A

Maxillary ostium to hiatus semilunaris at middle meatus

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14
Q

Ethmoid sinus drain anteriorly at

A

Hiatus semilunaris and middle meatus

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15
Q

Posterior drainage of ethmoid sinus

A

Superior meatus and sphenoethmoidal recess

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16
Q

Frontal recess drain into

A

Frontal recess into middle meatus

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17
Q

Sphenoid sinus drain into

A

Sphenoethmoidal recess

18
Q

Infraorbital ethmoid cell

A

Haller cells

19
Q

Ethmoid air cells that extend into inferomedial orbital floor

A

Haller cells

20
Q

Most anterior air cells that involve lacrimal bone or maxilla

A

Agger nasi cells

21
Q

Posterior ethmoid air cells are with prominent superolateral pneumatization with close relationship to the optic nerve

A

Onodi cells (sphenoethmoidal cells)

22
Q

Major crossroads between nasal cavity, masticator space, orbit and middle cranial fossa

A

Ptertgopalatine fossa

23
Q

Nasal mucosa and sensory nerves traverse

A

Cribriform plate

24
Q

Ostiomeatal unit include

A 
Superomedial maxillary sinus
maxillary infundibulum
Uncinate process
Ethmoid bulla
Hiatus semilunaris
Middle meatus
25
Q

Ostiomeatal unit recieves drainage from

A

Frontal, anterior ethmoid and maxillary sinuses

26
Q

Defines the wall of maxillary infundibulum

A

Uncinate process

27
Q

Aeration of nasal turbinate, most commonly middle turbinate

A

Concha bullosa

28
Q

Anterior wall of pterygopalatine fossa

A

Posterior wall of maxillary sinus

29
Q

Posterior wall of pterygopalatine fossa

A

Pterygoid plates and inferior aspect of lesser wing of sphenoid bone

30
Q

Roof of pterygopalatine fossa

A

Inferior orbital fissure

31
Q

Floor of pterygopalatine fossa

A

Narrowing to palatine canals

32
Q

Medial wall of pterygopalatine fossa

A

Perpendicular plate of palatine bone with sphenopalatine foramen

33
Q

Lateral wall of pterygopalatine fossa

A

Narrowing to pterygaxillary fissure

34
Q

Critical contents of pterygopalatine fossa

A

Pterygopalatine ganglion

Maxillary nerve via foramen rotundum

35
Q

Lateral opening into the nasopharyngeal masticator space, between the maxilla and lateral pterygoid plate

A

Pterygomaxillary fissure

36
Q

Medial opening into superior meatus

A

Sphenopalatine foramen

37
Q

Posterior opening to middle cranial fossa that transmits maxillary nerve

A

Foramen rotundum

38
Q

Posterior opening below foramen rotundun that extends posteriorly to foramen lacerum (transmits vidian nerve)

A

Vidian canal

39
Q

Anterior opening into orbit

A

Inferior orbital fissure

40
Q

Transmits infraorbital nerve and artery

A

Inferior orbital fissure

41
Q

Inferior canal leading to greater and lesser palatine foramina to oral cavity

A

Pterygopalatine canal

42
Q

Transmits descending palatine nerve and artery

A

Pterygopalatine canal

Head and neck radiology (15 decks)

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