eyes?
EXTERNAL
- orbit- houses and protects the eyeball
- lacrimal apparatus- stores tears
- lacrimal gland-transports tears
- conjunctiva-lines the exposed surface of the eyeball
INTERNAL
- aqeous humor-bathes the iris, pupil and lens
- vitreous humor- occupies the entire eye cavity behind the lens
- eyeball
- sclera- contains the cornea- allows light to pass through
- choroid-contains iris-is a sphincter-contains pupil- the opening
- retina- contains rods- active in dim light- contains cones-activ in bright light-contains the lens- controlled by the ciliary muscle
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