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Orbit and Vision > Innervation of the eye > Flashcards

Innervation of the eye Flashcards

1
Q

Sensory division

A

CN V1 (Ophthalmic division Trigeminal)

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2
Q

Motor division

A

CN 3,4,6

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3
Q

CN 3 OCULOMOTOR

A

superior: levator palpebae superioris, superior rectus
inferior: medial, inf oblique, inf rectus

branches JUST BEFORE LEAVING CRANIAL CAVITY THROUGH SUPERIOR ORBITAL FISSURE

Parasymp. fibers: to ciliary ganglion behind eyeball
these fibers supply muscle of ciliary body and constrictor of pupil

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4
Q

CN 4 TROCHLEAR

A

leaves cran. cavity through sup. orbital fissure into the orbit

supplies: superior oblique muscle ONLY (runs medially)

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5
Q

CN 5 (Trigem) V1 (Ophthalmic division)

A

3 divisions

  1. Frontal- supraorbital and supratrochlear
  2. Lacrimal-passes laterally to lacrimal gland
  3. Nasociliary-external nasal nerve (tip nose), ciliary (enters eyeball)
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6
Q

CN 6 (Abducens)

A

innervates lateral rectus muscle

passes through superior orbital fissure

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Orbit and Vision (5 decks)

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