THRC.17 Flashcards by Oliver Woodroffe

Q

A

Lens

with zonular fibres

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Q

A

Cornea

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Q

A

Pupil

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Q

A

Iris

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Q

A

Anterior chamber

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Q

A

Posterior chamber

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Q

A

Ciliary body

With:

Ciliary part of retina
Iridial part of retina

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Q

A

Vitreous layer

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Q

A

Optic nerve

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Q

A

Optical part of retina

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Q

A

Ciliary process

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Q

A

Ciliary body

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Q

A

Zonular fibres

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Q

A

Pupillary margin

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Q

The lens is suspended by…

A

Ciliary zonule

via zonulary fibres

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Q

Give the structures of the lens

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A

Lens capsule
Lens epithelium
Lens fibres
Lens nucleus

Q

Lens nucleus

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A

Area where the lens fibres become more dense

Towards the centre

Q

Aqueous humour is found…

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A

Posterior chamber
Anterior chamber

Q

Vitreous humour is found…

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A

Vitreous body

Q

Which structure has the highest refractive index?

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A

The lens

Q

Where do sympathetic and parasympathetic fibres of the iris and ciliary body come from?

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A

Ciliary ganglion

Q

Postganglionic sympathetic fibres supply…

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A

Dilator pupillae muscle
Ciliary processes

Q

Parasympathetic fibres in the eye arise from….

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A

Oculomotor nerve

Q

Parasympathetic fibres in the eye supply…

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A

Sphincter pupillae muscle
Ciliary muscle

Parasympathetic action of the eye triggers...

* Constriction of the pupil * Contraction of the ciliary muscle

Optic nerve

Where is the visual cortex located?

Occipital lobe

Optic chiasm

Optic tract

Optic thalamus

Visual cortex

Rostral colliculus

Pituitary gland

Give the pathway of the optic tract

* Eyes → Optic chiasm * Optic tract: * → Optic thalamus * → Rostral colliculus * Visual cortex → Rostral colliculus