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Theme 1: Fundamental Neuroscience and the Brain > Orbit and nasal cavity > Flashcards

Orbit and nasal cavity Flashcards

1
Q

What is the arterial supply to the nose

A

branches from ophthalmic and maxillary.

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2
Q

What is the nerve supply to the nose

A

CNI, V1, V2

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3
Q

Describe the process of olfaction

A
  • Olfaction receptors in epithelium lining roof and walls,
  • epithelium secretes a mucus fluid
  • odoriferous gases are dissolved into fluid
  • detected by the olfactory nerves
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4
Q

Describe the anatomy of the eye

- 3 layers

A
  1. Outer fibrous- sclera and cornea
  2. Vascular- iris
  3. Inner- retina

Located in orbit, suspended by muscles

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5
Q

superior rectus

-motor innervation

A

elevation
up and in

-CN3

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6
Q

inferior rectus

-motor innervation

A

depression
down and out

-CN3

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7
Q

medial rectus

-motor innervation

A

AD duction

-CN3

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8
Q

role of lateral rectus

-motor innervation

A

AB duction

-CN6

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9
Q

superior oblique

  • action
  • motor innervation
A

down and out

-CN 4

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10
Q

inferior oblique

  • action
  • motor innervation
A

up and out

-CN 3

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11
Q

What is the exit of CNIII

A

superior orbital fissure

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12
Q

what does CN IV supply

A

trochlear

motor to superior oblique

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13
Q

What does CN VI supply

A

abducent

motor to lateral rectus

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14
Q

What is the innervation to Levator Palpebrae

A

CN III

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15
Q

blood supply to orbit

A

opthalmic
infra orbital
central

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16
Q

nerve supply to the orbit

A

CN2,3, 4, V1(5), 6, 7

17
Q

What are the 3 main nasal cartilages

A

major alar
lateral
septal

18
Q

Paranasal sinuses [4]

A
  • 4 paired air-filled spaces surrounding nasal cavity
  • Frontal sinus
  • Ethmoidal cells
  • Sphenoid
  • Maxillary sinus
19
Q

Where do ethmoidal cells drain into?

A

if anterior or middle - middle meatus

if posterior- drains into superior meatus

20
Q

Where do the sphenoidal sinuses drain into?

A

superior meatus

21
Q

Where do the frontal sinuses drain into?

A

middle meatus

22
Q

Where do the maxillary sinuses drain into?

A

middle meatus

23
Q

Elevation of the eyeball is mainly the action of which muscle

A

inferior oblique

24
Q

Depression of the eyeball is mainly the action of which muscle

A

superior oblique

Theme 1: Fundamental Neuroscience and the Brain (24 decks)

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