ANAT 315 - The Eye & Bony Orbit

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What is this hole called? list the structures that pass through it

what are these holes called? What structures pass through them?

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Label the layers of the eyeball. List what structures are in each layer

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label. state the purpose of each

label. what layer are these part of?

label. state the function of the red

label. state the action and innervation of the muscular structures

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which muscle and division of the autonomic nervous system is responsible for pupil dilation? pupil constriction?

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describe how the lens focuses on distant objects

describe how the lens focuses on near objects

when the ciliary muscle contracts, how does it affect the diameter of the ciliary muscle ring? when it relaxes?

when light rays from a distant object hit the eye, describe what happens to:

• ciliary muscles

• zonular fibres

• lens shape

to focus light on the retina

do the same thing for light rays from a close up object

label. state the purpose of the one on the right

label. state the function of the one on the left

label. state the function of each

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label. state the function of each

state the purpose of rods and cones

label each of the structures

explain myopia (near-sightedness) and hyperopia (far-sightedness). Be sure to reference the fovea, the light, the lens shape, and the eyeball shape

Fibrous Layer:

• sclera

• cornea

Vascular Layer:

• iris

• ciliary body

Neural Layer:

• rods & cones

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state the purpose of aqueous humour and where it is produced

describe the flow of aqueous humour

Produced via the ciliary body and flows into the posterior chamber, passes through the pupil into the anterior chamber

what is the posterior cavity filled with?

state the purpose of this substance?

name the extraouclar muscles

label the muscles and state their action

name this rectus muscle. where do the rectus muscles insert?

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name these muscles and state their action

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name each muscle AND state what cranial nerve innervates it

label. What does it produce? what is its innervation?

fill in the blanks

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optic chiasm

A. sclera

B. iris

C. lacrimal punctum

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B.

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