Topic 13 Orbital Vessels Flashcards

1
Q

what is the blood supply of the cornea?

A

Periphery supplied by limbal blood vessels (which is an anterior ciliary artery branch)

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2
Q

what is the blood supply of the uveal tract?

A

Long posterior ciliary arteries supply the choroid

Short posterior ciliary arteries supply the choroid and sclera

Iris & ciliary body: Major arterial circle which consists of 2 long posterior arteries and 7 short anterior arteries.

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3
Q

what is the blood supply of the sclera? (Anteriorly, posteriorly and episcelra)

A

Anteriorly: long posterior ciliary arteries

Posteriorly: circle of Haller-Zinn
(short posterior ciliary arteries)

Episclera: Anterior ciliary arteries

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4
Q

what is the blood supply of the retina?

A

Inner Retina: Supplied by the Central Retinal Artery (and Vein)

Outer Retina: photoreceptors and the RPE are supplied by the choriocapillaris underneath (branches of the ciliary arteries)

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5
Q

what is the 2 blood supplies of the conjunctiva?

A

Anterior ciliary arteries, Lacrimal artery

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6
Q

what is the blood supply of the eyelids? (General: 3, LPS: +2, OO:+1)

A

Medial palpebral artery, Lacrimal artery, facial artery

LPS muscle: Supraorbital artery, muscular arteries

Orbicularis oculi muscle: Supraorbital artery

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7
Q

what is the blood supply of the eyebrows?

A

Supraorbital artery, Supratrochlear artery

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8
Q

what is the 2 blood supplies of the lacrimal apparatus?

A

lacrimal artery (lacrimal gland)

medial palpebral artery

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9
Q

what is the 2 blood supplies of the muscles of the forehead?

A

Supratrochlear artery, Supraorbital artery

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10
Q

what is the blood supply of the EOM? (General, SR and SO:+1, IR and IO:+1)

A

All EOM are supplied by the muscular branches of the ophthalmic artery

SR and SO: Supraorbital artery

IR and IO: Infraorbital artery

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11
Q

what is the blood supply of the optic nerve?

A

short posterior ciliary artery

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12
Q

what is the blood supply of the globe and adnexa?

A

Ophthalmic artery

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