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16 Cards in this Set
- Front
- Back
A nerve that carries messages from the photorecpetors in the retina to the brain
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The optic nerve.
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The tough white fibrous outter layer thats protects the eye and gives its shape.
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The sclera
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prevents objects from going behind the eye
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Conjunctiva
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See color by using three types of Rhodopsin, one for each primary colour Red Green Blue
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Cones
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Detect shades of black and white excellent with motion, work weel in low light and peripheral vision
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Rods
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Enriched with blood vessels brings in nutrients
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choroid layer
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chamber filled ith vitreous humour and brings nutrients to lens
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posterior chamber
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Chamber filled ith aqeuous humour brings nutrients to the cornea and front of lens
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Anterior Chamber
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Filled with cones only used for detailed vision
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Fovea Centralis
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Regulates the amount of light that eneters the eye
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Iris
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Aids in light refraction and gives eye ball shape
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Vitreous humour
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Energy source protects eye against impact
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Fat deposit
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pupil size and lens shape , changes with distance, Far objects lens is stretched flat, close objects it bulges out
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accomodation reflex
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bright light causes the Iris to enlarge and pupil to shrink, low light cause the opposite Iris shrinks pupil enlarges
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light reflex
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changes the shape of the lens in order to focus
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ciliary muscles
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bends light rays into the eye
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cornea
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