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78 - Nasal cavity - nerves & vessels Flashcards

1
Q

Arterial Supply of the Nasal Cavity

Identify 1 → 4

A
  1. Sphenopalatine a.
  2. Posterior ethmoid a.
  3. Anterior ethmoid a.
  4. Greater palatine a.
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2
Q

Arterial Supply of the Nasal Cavity

Identify 1 → 4

A
  1. Sphenopalatine a.
  2. Posterior ethmoid a.
  3. Anterior ethmoid a.
  4. Greater palatine a.
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3
Q

Arterial Supply of the Nasal Cavity

Identify 5

A
  1. Septal branch of superior labral a.
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4
Q

Arterial Supply of the Nasal Cavity

Source of Anterior ethmoid artery

A

Ophthalmic a.

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5
Q

Arterial Supply of the Nasal Cavity

Anterior ethmoid artery

→ travels with nasociliary n. through (1)____ and enters anterior cranial fossa, where it gives rise to meningeal branch and nasal branches that descend into nasal cavity to supply (2) ___ and ____ before giving rise to external nasal a., which supplies nose

A
  1. anterior ethmoidal foramen
  2. lateral wall and septum of nose
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6
Q

Arterial Supply of the Nasal Cavity

Source of POSTERIOR ethmoid artery

A

Ophthalmic a.

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7
Q

Arterial Supply of the Nasal Cavity

Posterior ethmoid artery

→ Travels through posterior ethmoidal foramen to enter anterior cranial fossa, where it gives rise to (1)____ and ____ that descend into nasal cavity through (2)____ to supply part of lateral wall near superior nasal concha and posterosuperior portion of nasal septum

A
  1. meningeal branch and nasal branches
  2. cribriform plate
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8
Q

Arterial Supply of the Nasal Cavity

Source of Sphenopalatine a.

A

3rd part of maxillary a.

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9
Q

Arterial Supply of the Nasal Cavity

Sphenopalatine a.

→ After passing through sphenopalatine foramen, enters nasal cavity where it gives rise to ____

A

posterosuperior nasal branches

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10
Q

Arterial Supply of the Nasal Cavity

septal branch of superior labial artery travels along (1)____

→ it is a major blood supply to (2)___

A
  1. Nasal septum
  2. Anterior part of nasal septum
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11
Q

Arterial Supply of the Nasal Cavity

Sphenopalatine a.

→ Posterosuperior lateral branch supplies ____ (3)

→ posterosuperior medial branch continues along _____

A

→ nasal concha, mucous membranes, and lateral wall

→ nasal septum (to enter hard palate via incisive canal)

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12
Q

Arterial Supply of the Nasal Cavity

Sphenopalatine a.

→ posterosuperior medial branch continues along nasal septum to enter _____

A

hard palate via incisive canal

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13
Q

Arterial Supply of the Nasal Cavity

Source of Greater palatine artery

A

3rd part of maxillary artery

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14
Q

Arterial Supply of the Nasal Cavity

Greater palatine a.

→ Descending palatine travels in palatine canal, where it divides into (1)____ and ____, which anastomoses with terminal branch of (2)____, which exits incisive foramen

A
  1. lesser palatine a. and greater palatine a.
  2. sphenopalatine a.
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15
Q

Arterial Supply of the Nasal Cavity

Source of septal branch of superior labial artery

A

Facial artery

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16
Q

Sensory Innervation of the Nasal Cavity

→ Identify 1 - 2

A
  1. External nasal branches of anterior ethmoid n.
  2. Lateral internal nasal branch of anterior ethmoid n
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17
Q

Sensory Innervation of the Nasal Cavity

→ Identify 3

A
  1. Medial internal nasal branch of anterior ethmoid n.
18
Q

Sensory Innervation of the Nasal Cavity

→ Source of anterior ethmoidal nerve

A

Nasociliary n. on medial wall of orbit

19
Q

Sensory Innervation of the Nasal Cavity

anterior ethmoidal nerve

→ Enters anterior ethmoid foramen and travels through canal to enter anterior cranial fossa and descends toward nasal cavity, providing innervation to _______ (3)

A
  • anterior parts of middle and inferior concha
  • region anterior to nasal concha
20
Q

Sensory Innervation of the Nasal Cavity

Maxillary division of trigeminal

→ Sensory branch that travels along lateral wall of cavernous sinus to enter pterygopalatine fossa via ____

A

foramen rotundum

21
Q

Sensory Innervation of the Nasal Cavity

Maxillary division of trigeminal

→ Sensory branch that travels along lateral wall of cavernous sinus to enter pterygopalatine fossa via foramen rotundum

→ Within pterygopalatine fossa, it gives rise to 4 branches which are __

A
  • Infraorbital—this is continuation of the maxillary
  • Posterior superior alveolar
  • Zygomatic
  • Ganglionic
22
Q

Sensory Innervation of the Nasal Cavity

Source of infraorbital nerve

A

Maxillary division of trigeminal

23
Q

Sensory Innervation of the Nasal Cavity

Infraorbital nerve

→ Passes through (1)_____ to enter orbit and travels anteriorly through infraorbital groove and infraorbital canal, and exits onto face via (2)____

A
  1. inferior orbital fissure
  2. infraorbital foramen
24
Q

Sensory Innervation of the Nasal Cavity

Infraorbital nerve

→ Passes through inferior orbital fissure to enter orbit and travels anteriorly through ___ and ____, and exits onto face via infraorbital foramen

A

infraorbital groove and infraorbital canal

25
Q

Sensory Innervation of the Nasal Cavity

Infraorbital nerve

→ Passes through inferior orbital fissure to enter orbit and travels anteriorly through infraorbital groove and infraorbital canal, and exits onto face via infraorbital foramen

→ While in infraorbital canal it gives rise to ____., which has a small branch that supplies nasal cavity in region of the inferior meatus and inferior corresponding portion of nasal septum

A

anterior superior alveolar n

26
Q

Sensory Innervation of the Nasal Cavity

Infraorbital nerve

→ Passes through inferior orbital fissure to enter orbit and travels anteriorly through infraorbital groove and infraorbital canal, and exits onto face via infraorbital foramen

→ While in infraorbital canal it gives rise to anterior superior alveolar n., which has a small branch that supplies nasal cavity in region of ___ and ____

A

the inferior meatus and inferior corresponding portion of nasal septum

27
Q

Sensory Innervation of the Nasal Cavity

Identify 1 → 3

A
  1. Nasopalatine n.
  2. Pterygopalatine ganglion
  3. Posterior superior lateral nasal n
28
Q

Sensory Innervation of the Nasal Cavity

Identify 4

A
  1. Posterior inferior lateral nasal n.
29
Q

Sensory Innervation of the Nasal Cavity

Identify 5

A
  1. Greater palatine n.
30
Q

Sensory Innervation of the Nasal Cavity

Source of nasopalatine nerve

A

Pterygopalatine ganglion in pterygopalatine fossa

31
Q

Sensory Innervation of the Nasal Cavity

Source of nasopalatine nerve

→ Passes through ______ to enter nasal cavity and travels along superior portion of nasal cavity to nasal septum where it travels anteroinferiorly to incisive canal supplying septum

A

sphenopalatine foramen

32
Q

Sensory Innervation of the Nasal Cavity

Source of nasopalatine nerve

→ Passes through sphenopalatine foramen to enter nasal cavity and travels along superior portion of nasal cavity to _____ where it travels anteroinferiorly to incisive canal supplying septum

A

nasal septum

33
Q

Sensory Innervation of the Nasal Cavity

Source of nasopalatine nerve

→ Passes through sphenopalatine foramen to enter nasal cavity and travels along superior portion of nasal cavity to nasal septum where it travels anteroinferiorly to ____ supplying septum

A

incisive canal

34
Q

Sensory Innervation of the Nasal Cavity

Source of Posterior inferior lateral nasal branch of greater palatine

A

Pterygopalatine ganglion in pterygopalatine fossa

35
Q

Sensory Innervation of the Nasal Cavity

Posterior inferior lateral nasal branch of greater palatine

→ Passes through (1)_____ to enter hard palate via greater palatine foramen and descends in palatine canal, giving rise to posteroinferior nasal branch, which supplies (2)_____

A
  1. palatine canal
  2. posterior part of lateral wall of nasal cavity in region of middle meatus
36
Q

Sensory Innervation of the Nasal Cavity

Source of Posterior superior nasal nerve

A

Pterygopalatine ganglion in pterygopalatine fossa

37
Q

Sensory Innervation of the Nasal Cavity

Posterior superior nasal nerve

→ Passes through ____ to enter nasal cavity and branches into

A

sphenopalatine foramen

38
Q

Sensory Innervation of the Nasal Cavity

Posterior superior nasal nerve

→ Passes through sphenopalatine foramen to enter nasal cavity and branches into __ (2)

A

Posterior medial superior nasal

Posterior lateral superior nasal

39
Q

Sensory Innervation of the Nasal Cavity

Source of Posterior superior lateral nasal

A

Posterior superior nasal from pterygopalatine ganglion

40
Q

Sensory Innervation of the Nasal Cavity

Source of Posterior superior lateral nasal

→ Supplies posterosuperior portion of lateral wall of nasal cavity in the region of ____

A

superior and middle concha

41
Q

Sensory Innervation of the Nasal Cavity

Posterior superior medial nasal

→ Supplies ___

A

posterior portion of nasal septum

A Head & Neck (94 decks)

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