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Neurocranial Anatomy > Eyeball > Flashcards

Eyeball Flashcards

1
Q

Orbital Margin

A

Zygomatic, Frontal, Maxilla

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2
Q

Apex of Optic Cavity

A

Optic Foramen

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3
Q

Optic foramen/canal transmits

A
  1. Optic Nerve (CNII)

2. Opthalmic Artery - opthalmic branch of the internal carotid - blood supply to the entire eye

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4
Q

Superior orbital fissure

A
  1. Oculomotor N - CNIII
  2. Trochlear N - CN IV
  3. Abducens N - CN VI
  4. Opthalmic div of trigeminal (CN V1)
  5. Suprior Opthalmic Vein
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5
Q

Inferior Orbital Fissure

A
  1. Inferior Opthalmic Vein
  2. Infraorbital NAV
  3. Zygomatic N
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6
Q

Supraorbital Foramen

A

NAV of the same name

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7
Q

Infraorbital Canal

A
  1. Infraorbital N
  2. Zygomatic N
    - both are cutaneous branches of the Maxillary N (CNV2)
    * Infraorbital N enters through the inferior orbital fissure, runs along the floor of orbit, enters canal, then leaves through infraorbital foramen
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8
Q

Anterior Ethmoidal Foramen

A

NAV of the same name

*branch of nasociliary n, branch of opthalmic n of the trigeminal

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9
Q

Posterior Ethmoidal Foramen

A

NAV of the same name

**branch of nasociliary n, branch of opthalmic n of the trigeminal

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10
Q

Name for duct that gets encrircled by bone -> tear gland

A

Nasolacrimal Duct

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11
Q

Zygomaticofacial Foramen

A

considered w/ orbital region due to the transmission of the zygomatic nerve through the inferior orbital fissure into the orbital cavity and out through formaina

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12
Q

Zygomaticotemporal foramen

A

considered w/ the orbital region due to transmission of the zygomatic nerve through inferior orbital fissure into the orbital caivty and out through the foramina

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13
Q

What is the general consensus on the origin of the extrinsic muscles of the eye?

A

All of them originate from the annular tendon w/ the exception of the inferior oblique, which originates from the orbital plate of the maxilla

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14
Q

Levator palpebrae superiorirs

A

elevates upper eyelid

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15
Q

Superior rectus

A

up and in

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16
Q

Inferior rectus

A

down and in

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17
Q

Medial rectus

A

Adducts towards midline

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18
Q

Laterial rectus

A

Abducts away from midline

19
Q

Superior oblique

A

down and out

tendon goes through trochlea

20
Q

Inferior oblique

A

Up and out

21
Q

To look straight up

A

Superior rectus + Inferior Oblique

22
Q

To look straight down

A

Inferior Rectus + Superior Oblique

23
Q

Oculomotor N

A 
SR
MR
IR
IO
Levator Palpebrae
24
Q

Trochlear

25
Q

Abducens

26
Q

Frontal Nerve

A

Sensory N to scalp and upper eyelid

27
Q

Lacrimal Nerve

A

Sensory nerve to lacrimal gland, eye conjuctiva, and lateral upper eyelid

28
Q

Nasociliary Nerve

A
  1. Long Ciliary
  2. Posterior Ethmoidal N
  3. Anterior Ethmoidal
  4. Infratrochlear N
29
Q

Posterior Ethmoidal N

A

Sensory to post ehtmoidal cells (sinsus)

30
Q

Anterior Ethmoidal N

A

Sensory to median skin on external nostril as external nasal N

31
Q

Infratrochlear N

A

Sensory to skin and conjuctiva of medial upper eyelid

32
Q

Ciliary Ganglion Location

A

Off of the nasociliary N.

33
Q

Short Ciliary Nerves

A

Contain sensory fibers for eye and cornea

-btwn ciliary gangion and the back of the eye

34
Q

Long Ciliary Nerves

A

Contain sensory fibers innervating the eye and cornea

35
Q

Blood Vessels for the Eye

A

Opthalmic Artery

Opthalmic Vein

36
Q

Opthalmic Artery Branches

A
  1. Lacrimal branch (to lacrmial gland)
  2. Supraorbital Branch
  3. Anterior/posterior Ehtmoidals
37
Q

Ophthalmic Artery Enters through the _____.

A

Optic Canal

38
Q

Ophthalmic Vein Branches

A
  1. Superior Branch

2. Inferior Branch

39
Q

Ophthalmic Vein Clinical Sig.

A

Drain to cavernous sinus

-infection can spread through venous connections to cranial vault

40
Q

Superior Ophthalmic Vein Exits through the ______.

A

Superior Orbital Fissure

41
Q

Inferior Ophthalmic Vein exits through the ______.

A

Inferior Orbital Fissure

42
Q

Lacrimal Gland breakdown

A
  1. Gland
  2. Puncta
  3. Canals
  4. Lacrimal Sac
  5. Nasolacrimal Duct
43
Q

Where does nasolacrimal duct empty into?

A

Inferior nasal meatus

Neurocranial Anatomy (10 decks)

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