Eye Flashcards

1
Q

Where do blow out fractures occur?

A

Maxillary bone

specifically the area where the nerve runs through

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2
Q

Action and innervation of L. rectus

A

Abducts eye

CN VI

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3
Q

Action and innervation of Inf rectus

A

Depress and adduct eye

CN III

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4
Q

Action and innervation of S. rectus

A

Elevate and adduct eye

CN III

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5
Q

Actionand innervation of Med. rectus

A

adduct eye

CN III

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6
Q

Action and innervation of Sup. oblique

A

depress and abduct eye

CN IV

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7
Q

Action and innervation of Inf. oblique

A

Elevate and abduct eye

CN III

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8
Q

Action and innervation of Levator palpebrae

A

elevate upper lid

CN III

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9
Q

What muscles would be used to move the eye straight up or straight down?

*Potential exam Q*

A

Moving the eye up: Sup. rectus, inf. oblique

Moving the eye down: Inf. rectus, Sup. oblique

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10
Q

What travels through the sup orbital fissure?

A
  • CN III
  • CN IV
  • CN V1 branches
    • Lacrimal N
    • Frontal N
      • Supraorbital
      • Supratroch.
    • Nasociliary N
      • Ciliary N
      • A+P Ethmoidal
  • CN VI
  • Ophthalmic vein
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11
Q

What travels through the optic canal?

A
  • CN II
  • Opthalmic A.
    • Supraorbital A.
    • Supratroch. A
    • A+P ethmoidal aa
    • Central A of retina
    • Ciliary aa to sclera and choroid
    • lacrimal A.
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12
Q

What drains into opthalmic vein?

A

Facial vein

Supraorbital vein

supratrochlear v

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13
Q

Where does opthalmic vein drain into?

A

Cavernous sinus

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14
Q

Branches of V1

A

Lacrimal N

Frontal N

               - Supraorbital N.
                   - Supratrochlear N.

Nasociliary N

       - Ciliary N.
                          - A+P ethmoidal NN
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15
Q

Cranial parasympathetics travel with which CN after leaving pons?

A

III, IV, IX, X

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