THRC.16 Flashcards by Oliver Woodroffe

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Dorsal straight muscle

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Sclera

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Superior conjunctival fornix

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Scleral ring

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Lens

with zonular fibres

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Cornea

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Pupil

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Iris

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Anterior chamber

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Posterior chamber

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Blind spot of retina

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Ciliary body

With:

Ciliary part of retina
Iridial part of retina

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Inferior conjunctival fornix

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Ventral straight muscle

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Fibrous layer

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Vascular layer

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Inner layer

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Vitreous layer

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Optic nerve

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Neural sheaths:

Pia mater
Arachnoid membrane
Dura mater

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Optical part of retina

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Choroid

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Q

Point of insertion for the ciliary muscle

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A

Annulus sclerae of the corneoscleral junction

Q

Where does aqueous humour drain?

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A

Through the scleral venous plexus

Sclera

Limbus of the cornea

Anterior chamber

Anterior epithelium

Proper substance

Posterior epithelium

Iridocorneal angle

Ciliary process

Posterior chamber

Scleral venous plexus

Pectinate ligament

Ciliary body

Blind spot of retina

Zonular fibres

Pupillary margin

Trochlea ## Footnote *with tendon of the dorsal oblique muscle*

Ventral oblique muscle

Ventral straight muslce

Dorsal straight muscle

Dorsal oblique muscle

Retractor muscle of the eyeball

Lateral straight muscle

Optic nerve

Orbital fissure

Function of the trochlea in the eye

* Dorsal oblique muscle turns around the trochlea * Giving a counter-effect

Point of origin of the muscles moving the eye

* Pterygoid crest of basisphenoid (ØCa) * Orbital fissure (Ca)

Principal blood supply of the eye is provided by...

External ophthalmic artery *ex. maxillary artery*

Give the 3 blood supply types of the eye

* Conjunctiva-episcleral * Cilliary * Retinal

Give the conjunctival-episcleral blood vessels

* Conjunctival branch * Episcleral branch

Give the cilliary blood vessels

* Posterior part of the ciliary artery * Anterior part of the ciliary artery

Give the retinal blood vessels

* Internal ophthalmic artery * External ophthalmic artery ## Footnote *Anastomise*

Central retinal artery *ex external ophthalmic artery*

Give the pathway of excretions from the lacrimal gland

1. Lacrimal gland → Eye 2. Lacuna → Lacrimal duct 3. Lacrimal sac 4. Nasolacrimal duct