Eye Flashcards by Hamish Anderson

Q

Layers of eye from outside to inside

A

Fibrous coat

Vascular coat

Sensory coat

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Q

2 parts of fibrous layer

A

Cornea

Sclera

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Q

3 parts of Vascular coat

A

Iris

Ciliary body (under sclera)

Choroid (non visible part)

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Q

Name of sensory coat

A

Retina

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Q

Role of iris

A

Change diameter of pupil

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Q

Role of ciliary body

A

Suspends the lens and produces Aques Humor

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Q

Role of choroid

A

Supplies blood to retina

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Q

Aqueous humor

A

Fills gap between lense and cornea

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Q

Fluid inside eyeball

A

Vitreous humor

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Q

What is the posterior chamber

A

Behind iris but infront of lens

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Q

Where is aqueous humor absorbed

A

Chamber of schlemm

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Q

Foremen of orbit

A

Optic foreman

Superior orbital fissure

Inferior orbital fissure

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Q

What connects conjunctiva to sclare

A

Fornix

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Q

Gland which secretes tears

A

Lacrimal gland

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Q

What nerve innervates the lacrimal gland

A

Facial nerve

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Q

Teats drain into what in the eye

A

Lacrimal sac

Q

Where does lacrimal sca drain

A

Nasolacrimal duct into inferior meatus of nasal cavity

Q

Role of intrinsic muscles of eye

A

Change shape of pupil

Q

Role of extrinsic muscles of the eye

A

move eye

Q

What intrinsic muscles are parasympathetic

A

Constrictor pupillae

Ciliaris

Q

What intrinsic muscles are sympathetic

A

Dilator pupillae

Q

4 Straight muscles of eye

A

Superior rectus
lateral rectus
medial rectus
inferior rectus

Q

2 oblique muscles of the eye

A

Superior oblique

Inferior oblique

Q

Main nerve of extrinsic muscles

A

Oculomotor (III)

What nerve supplies the Superior oblique

Trochlear (IV)

What nerve supplies lateral rectus

Abducent (VI)

What is ophthalmic artery a branch of

ICA

What foreman does the ophthalmic artery enter orbit through

Optic foreman

What artery supplies the choroid

Short posterior ciliary arteries

What do the ohpthalmic veins drain into

Cavernous sinus