Orbit Flashcards by Courtney @Brainscape

Q

Bones Surrounding Orbit

A

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Q

Boundaries of Orbit

A

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Q

Orbital Contents

(5)

A

Eyeball

Fat and connective tissue

Extraocular muscles

Nerves

Blood Vessels

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Q

Tarsal Plates

A

Dense connective tissue

Support eyelid

Glands

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Q

Orbital Ligaments

Suspensory

Check

A

Support eyeball

Restrict medial and lateral recti

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Q

Eyeball

A

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Q

Aqueous Humour

A

Anterior to lens and helps mainain intra-ocular pressure

Produced by ciliary body and drains inot Schlemms canal at corneo-scleral junction

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Q

Vitreous Humor

(4)

A

Embryological

Transparent jelly

Posterior to lens

Supports retina

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Q

Intraocular (intrinsic) muscles - Dilator Pupillae

Function

A

Increases diameter of pupil

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Q

Intraocular (intrinsic) muscles - Dilator Pupillae

Innervation

A

Sympathetic and carried on blood vessels

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Q

Intraocular (intrinsic) muscles - Sphincter Pupillae

Function

A

Decreases pupil diameter

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Q

Intraocular (intrinsic) muscles - Sphincter pupillae

Innervation

A

Parasympathetic via oculomotor nerve CN III

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Q

Extraocular (extrinsic) muscles

A

7 of them

Levator palpebra superioris

Superior, inferior, medial and lateral recti from annular ring to sclera

Superior oblique and inferior oblique to sclera

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Q

Orbital Muscles

A

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Q

Optic Nerve and Visual Cortex

A

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Q

Cranial Nerves to Orbital Muscles

A

Q

Cranial Nerves to Structures in Orbit

A

Q

Oculomotor Nerve

A

Q

Nasociliary Nerve

A

Q

Abducent and Trochear Nerves

A

Q

Opthalmic Artery Branches

A

Q

Orbital veins

A

Q

Lacrimal Apparatus

A

Q

A