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A Head & Neck > the Paranasal Sinuses: nerves and vessels > Flashcards

the Paranasal Sinuses: nerves and vessels Flashcards

1
Q

Identify

A
  1. Frontal sinus
  2. Ethmoid sinuses
  3. Maxillary sinus
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2
Q

Identify

A
  1. Frontal sinus
  2. Ethmoid sinuses
  3. Maxillary sinus
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3
Q

Identify

A
  1. Frontal sinus
  2. Ethmoid sinuses
  3. Maxillary sinus
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4
Q

Identify

A
  1. Frontal sinus
  2. Ethmoid sinuses
  3. Sphenoid sinus
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5
Q

Location of frontal sinus

A

Within frontal bone

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6
Q

Arterial supply of frontal sinus

A

Ophthalmic branches (anterior ethmoidal, supraorbital, supratrochlear arteries)

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7
Q

Nerve supply of frontal sinus

A

ophthalmic division of trigeminal nerve

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8
Q

Location of maxillary sinus

A

Within maxillary bone

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9
Q

Arterial supply of maxillary sinus

A

Maxillary branches

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10
Q

Nerve supply of maxillary sinus

A

Within Maxillary division of trigeminal

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11
Q

Location of ethmoid sinus

A

Within ethmoid bone

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12
Q

Arterial supply of ethmoid sinus

A

Ophthalmic and maxillary branches

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13
Q

Nerve supply of ethmoid sinus

A

Ophthalmic and maxillary division of trigeminal

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14
Q

Vascular Supply of the Frontal Sinuses

What are the 3 branches that supply frontal sinus?

A

Anterior ethmoidal artery

Supraorbital artery

supratrochlear artery

→ coming from Ophthalmic a. (from internal carotid)

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15
Q

Vascular Supply of the Frontal Sinuses

Identify 1 → 3

A
  1. Supraorbital a.
  2. Supratrochlear a.
  3. Frontal sinus
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16
Q

Vascular Supply of the Frontal Sinuses

Identify 4 → 5

A
  1. Lacrimal a.
  2. Optic n
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17
Q

Vascular Supply of the Frontal Sinuses

Identify 6 - 7

A
  1. Posterior ethmoid a.
  2. Anterior ethmoid a.
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18
Q

Nerve Supply of the Frontal Sinuses

→ What are the 2 nerves that supply frontal sinuses? Their sources?

A

Ophthalmic division of trigeminal

→ Supraorbital & supratrochlear nerves

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19
Q

Nerve Supply of the Frontal Sinuses

→ Supraorbital nerve passes between ___ and ____

A

levator palpebrae superioris m. and periosteum of orbit

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20
Q

Nerve Supply of the Frontal Sinuses

→ Identify 1 → 3

A
  1. Supraorbital n.
  2. Supratrochlear n.
  3. Frontal sinus
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21
Q

Nerve Supply of the Frontal Sinuses

→ Identify 4 → 6

A
  1. Lacrimal n.
  2. Frontal n.
  3. Nasociliary n.
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22
Q

Nerve Supply of the Frontal Sinuses

→ Identify 7 -8

A
  1. Posterior ethmoid n.
  2. Anterior ethmoid n.
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23
Q

Vascular Supply of the Ethmoid Sinuses

Identify 1 - 2

A
  1. Anterior ethmoid a.
  2. Posterior ethmoid a.
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24
Q

Vascular Supply of the Ethmoid Sinuses

Identify 3 - 4

A
  1. Sphenopalatine a.
  2. Posterior lateral nasal a.
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25
Q

Vascular Supply of the Ethmoid Sinuses

Arterial branches that supply ethmoid sinuses?

A
  1. Anterior ethmoidal a. (Ophthalmic a. (from internal carotid))
  2. Posterior ethmoidal a Ophthalmic a. (from internal carotid))
  3. Posterior lateral nasal branches (Sphenopalatine a. (from maxillary a. from external carotid))
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26
Q

Vascular Supply of the Ethmoid Sinuses

Source of Posterior lateral nasal branches a.

A

Sphenopalatine a. (from maxillary a. from external carotid)

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27
Q

Vascular Supply of the Ethmoid Sinuses

Posterior lateral nasal branches a.

→ Anastomose with ___ to help supply ethmoid air cells and sphenoid sinus

A

ethmoidal aa.

28
Q

Nerve Supply of the Ethmoid Sinuses

Nerve Branches that supply ethmoid sinuses

A
  1. Anterior ethmoid
  2. Posterior ethmoid
  3. Posterior lateral superior nasal
  4. Posterior lateral inferior nasal
29
Q

Nerve Supply of the Ethmoid Sinuses

Identify 1 - 2

A
  1. Anterior ethmoid n.
  2. Posterior ethmoid n.
30
Q

Nerve Supply of the Ethmoid Sinuses

Identify 3 - 4

A
  1. Pterygopalatine ganglion
  2. Posterior lateral superior nasal n.
31
Q

Nerve Supply of the Ethmoid Sinuses

Identify 5 - 7

A
  1. Lesser palatine n.
  2. Greater palatine n.
  3. Posterior lateral inferior nasal n.
32
Q

Vascular Supply of the Maxillary Sinuses

3 branches? Their source(s)?

A

Maxillary a. from external carotid give rise to

  1. Anterior superior alveolar
  2. Middle superior alveolar
  3. Posterior superior alveolar
33
Q

Vascular Supply of the Maxillary Sinuses

Identify 1

A
  1. Maxillary a.
34
Q

Vascular Supply of the Maxillary Sinuses

Identify 2

A
  1. Infraorbital a.
35
Q

Vascular Supply of the Maxillary Sinuses

Identify 3 - 5

A
  1. Posterior superior alveolar a.
  2. Middle superior alveolar a.
  3. Anterior superior alveolar a.
36
Q

Vascular Supply of the Maxillary Sinuses

Anterior superior alveolar a.

→ Arises from _____ after it passes through inferior orbital fissure and into infraorbital canal and descends via alveolar canals to supply sinus

A

infraorbital a. of maxillary

37
Q

Vascular Supply of the Maxillary Sinuses

Anterior superior alveolar a.

→ Arises from infraorbital a. of maxillary after it passes through inferior orbital fissure and into infraorbital canal and descends via ___ to supply sinus

A

alveolar canals

38
Q

Vascular Supply of the Maxillary Sinuses

Middle superior alveolar a.

→ When present, it arises from infraorbital a. of maxillary after passing through ____ and into infraorbital canal and descends via alveolar canals to supply sinus

A

inferior orbital fissure

39
Q

Vascular Supply of the Maxillary Sinuses

Posterior superior alveolar a.

→ Arises from 3rd part of maxillary a. before maxillary a. enters_____

A

pterygopalatine fossa (and then branch)

40
Q

Vascular Supply of the Maxillary Sinuses

Posterior superior alveolar a.

→ Arises from 3rd part of maxillary a. before maxillary a. enters pterygopalatine fossa and branch

→ Enters _____ to supply sinus

A

infratemporal surface of maxilla

41
Q

Nerve Supply of the Maxillary Sinuses

Identify 1

A
  1. Maxillary n.
42
Q

Nerve Supply of the Maxillary Sinuses

Identify 2

A
  1. Posterior superior alveolar n.
43
Q

Nerve Supply of the Maxillary Sinuses

Identify 3

A
  1. Infraorbital n.
44
Q

Nerve Supply of the Maxillary Sinuses

Identify 4 - 5

A
  1. Middle superior alveolar n.
  2. Anterior superior alveolar n.
45
Q

Nerve Supply of the Maxillary Sinuses

Source of Anterior superior alveolar, Middle superior alveolar, Posterior superior alveolar nerves?

A

Maxillary division of trigeminal nerve

46
Q

Nerve Supply of the Maxillary Sinuses

Anterior superior alveolar nerve

→ Branches from (1)___ as it travels in infraorbital canal

→ As it descends to form (2)____, it innervates part of maxillary sinus

A
  1. infraorbital n.
  2. superior dental plexus
47
Q

Nerve Supply of the Maxillary Sinuses

Middle superior alveolar nerve

→ When present, it branches from infraorbital n. as it travels in (1)____

As it descends to form superior dental plexus, it innervates part of (2)____

A
  1. infraorbital canal
  2. maxillary sinus
48
Q

Nerve Supply of the Maxillary Sinuses

Posterior superior alveolar nerve

→ Arises in ___

A

pterygopalatine fossa

49
Q

Nerve Supply of the Maxillary Sinuses

Posterior superior alveolar nerve

→ Arises in pterygopalatine fossa and travels laterally through ____ to enter infratemporal fossa where it enters infratemporal surface of maxilla

A

pterygomaxillary fissure

50
Q

Nerve Supply of the Maxillary Sinuses

Posterior superior alveolar nerve

→ Arises in pterygopalatine fossa and travels laterally through pterygomaxillary fissure to enter ____

A

infratemporal fossa where it enters infratemporal surface of maxilla

51
Q

Nerve Supply of the Maxillary Sinuses

What is superior dental plexus? How is it formed?

A

The superior dental plexus is a nerve plexus which supplies the upper jaw.

-→ Formed by posterior superior alveolar nerve, middle superior alveolar nerve, and anterior superior alveolar nerve

52
Q

Vascular Supply of the Sphenoid Sinuses

Identify 1 - 2

A
  1. Posterior ethmoid a.
  2. Sphenopalatine a.
53
Q

Vascular Supply of the Sphenoid Sinuses

Identify 3

A
  1. Posterior lateral nasal a.
54
Q

Vascular Supply of the Sphenoid Sinuses

Source of posterior ethmoidal artery

A

Ophthalmic a. (from internal carotid)

55
Q

Vascular Supply of the Sphenoid Sinuses

posterior ethmoidal artery

→ Passes through posterior ethmoid foramen to enter canal where it supplies___ and ____

A

sphenoid sinus and posterior ethmoid air cells

56
Q

Vascular Supply of the Sphenoid Sinuses

Source of Posterior lateral nasal branches

A

Sphenopalatine a. from maxillary (from external carotid)

57
Q

Vascular Supply of the Sphenoid Sinuses

Posterior lateral nasal branches

→ anastomose with ethmoidal aa. to help supply ____ and ____

A

sphenoid sinus and ethmoid air cells

58
Q

Nerve Supply of the Sphenoid Sinuses

Identify 1 → 2

A
  1. Frontal sinus
  2. Ethmoid sinus
59
Q

Nerve Supply of the Sphenoid Sinuses

Identify 3

A
  1. Posterior ethmoid n.
60
Q

Nerve Supply of the Sphenoid Sinuses

Identify 4

A
  1. Pterygopalatine ganglion
61
Q

Nerve Supply of the Sphenoid Sinuses

Identify 5

A
  1. Orbital branch from pterygopalatine ganglion
62
Q

Nerve Supply of the Sphenoid Sinuses

Identify 6 - 7

A
  1. Nerve of the pterygoid canal
  2. Nasopalatine n.
63
Q

Nerve Supply of the Sphenoid Sinuses

Identify 8

A
  1. Posterior lateral superior nasal n.
64
Q

Nerve Supply of the Sphenoid Sinuses

Identify 9 - 10

A
  1. Lesser palatine n.
  2. Greater palatine n.
65
Q

Nerve Supply of the Sphenoid Sinuses

Source of Orbital branch from pterygopalatine ganglion

A

Maxillary division of trigeminal

A Head & Neck (94 decks)

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