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Anatomy Written 2 > Orbit > Flashcards

Orbit Flashcards

1
Q

Base

A

Orbital Margins

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2
Q

Apex

A

Optic Canal

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3
Q

Superior Wall

A

Frontal, Lesser wing of sphenoid

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4
Q

Lateral Wall

A

Zygomatic, Greater wing of sphenoid

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5
Q

Medial Wall

A

Frontal, Lesser wing sphenoid, ethmoid, lacrimal

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6
Q

Inferior Wall

A

Maxilla, Zygomatic, Palatine

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7
Q

Conjunctiva

A

Transparent Mucous membrane

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8
Q

Palpebral

A

Eyelid

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9
Q

Bulbar

A

???

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10
Q

Tarsal Plates

A

Dense bands of CT, structure of eyelids

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11
Q

Tarsal Glands

A

Lipid secreting glands embedded in tarsal plates

Keep edges of eyelids from sticking together

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12
Q

Ciliary Glands

A

Sebaceous glands associated with eyelashes

Inflammation –> Sty

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13
Q

Orbital

A 
Periorbita and meninges
Eyeball
Lacrimal Apparatus
Musculature
Innervation
Vasculature
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14
Q

Lacrimal Apparatus

A 
Lacrimal Gland (CN 7)
Lacrimal Ducts
Canaliculus (in puncta)
Lacrimal Sac
Nasolacrimal Duct
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15
Q

Levator Palpebrae Superioris

A

CN 3

Superior tarsal muscle of Muller (symp innervation)

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16
Q

Superior Oblique

A

CN 4

Uses trochlea as sling to insert onto posterosuperior surface of sclera, below superior rectus

17
Q

Inferior Oblique

A

CN 3
Only extrinsic muscle to originate from anterior orbit
Muscles run inferior to inferior rectus to insert onto posterinferior surface of sclera

18
Q

Muscles originating from common tendinous ring and insert onto sclera

A 
Superior Rectus (3)
Inferior Rectus (3)
Medial Rectus (3)
Lateral Rectus (6)
19
Q

Autonomic Musculature

A

In iris
Sphincter pupillae = CN 3, para
Dilator pupillae = symp from cervical chain

20
Q

Nerves

A 
CN 2 - Optic Canal
CN 3 - SOF
CN 4 - SOF
CN 6 - SOF
CN V1 - nasociliary, frontal, lacrimal
21
Q

Vasculature

A

Ophthalmic artery and vein

22
Q

Diplopia

A

???

23
Q

Internal Strabismus

A

CN 6

24
Q

External Strabismus

A

CN 3

25
Q

Mydriasis

A

CN 3 - para innervation

26
Q

Ptosis

A

Levator Palpebrae - CN 3

Anatomy Written 2 (11 decks)

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