Biology 30

Front 1

A nerve that carries messages from the photorecpetors in the retina to the brain

Back 1

The optic nerve.

Front 2

The tough white fibrous outter layer thats protects the eye and gives its shape.

Back 2

The sclera

Front 3

prevents objects from going behind the eye

Back 3

Conjunctiva

Front 4

See color by using three types of Rhodopsin, one for each primary colour Red Green Blue

Back 4

Cones

Front 5

Detect shades of black and white excellent with motion, work weel in low light and peripheral vision

Back 5

Rods

Front 6

Enriched with blood vessels brings in nutrients

Back 6

choroid layer

Front 7

chamber filled ith vitreous humour and brings nutrients to lens

Back 7

posterior chamber

Front 8

Chamber filled ith aqeuous humour brings nutrients to the cornea and front of lens

Back 8

Anterior Chamber

Front 9

Filled with cones only used for detailed vision

Back 9

Fovea Centralis

Front 10

Regulates the amount of light that eneters the eye

Back 10

Iris

Front 11

Aids in light refraction and gives eye ball shape

Back 11

Vitreous humour

Front 12

Energy source protects eye against impact

Back 12

Fat deposit

Front 13

pupil size and lens shape , changes with distance, Far objects lens is stretched flat, close objects it bulges out

Back 13

accomodation reflex

Front 14

bright light causes the Iris to enlarge and pupil to shrink, low light cause the opposite Iris shrinks pupil enlarges

Back 14

light reflex

Front 15

changes the shape of the lens in order to focus

Back 15

ciliary muscles

Front 16

bends light rays into the eye

Back 16

cornea