10.2 Sight Flashcards
3 main parts of eye
Eyebrow, eyelid, eyelash
Eyebrow function
X sweat
Eyelid function
Close: dirt, strong light
Blink: moisten surface
Eyelash function
X small particles (dust)
80% of the eye is hidden in the _____
Socket
10 parts of eye
Focusing muscle Sclera
Cornea Retina
Iris Blind spot
Pupil Optic nerve
Lens
Jelly-like fluid
Focusing muscle function
Lens thickness
Cornea function
Light pass, focus light
Iris function
Pupil size
Pupil function
Regulate amt of light
Lens function
Light pass, focus light
Jelly like fluid function
Focus light
Maintain eyeball shape
Sclera function
Protect eyebal
Retina function
Light sensitive cells detect light, produce signals
Blind spot function
Optic nerve leaves
No cells