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Sight - 3rd natural science
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What do nerve signals do?
The brain receives the nerve signals and can understand what the eye is seeing
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Eyes take in ____ and give us sight
light
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What are the protective parts of the eye?
eyebrows, eyelashes, eyelids, lacrimal glands
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What do lacrimal glands do?
they produce tears which keep the eye clean and moist
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what is the pupil?
the black circle in the middle of the iris, light enters the eye from the pupil
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What do eyebrows and eye lashes do?
Protect eye by preventing dust and sweat from entering
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what is the iris?
the colored circle at the front of the eye (it can be green, blue, brown)
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what do eyelids do?
spread the moisture from tears over the surface of the eye. Stop excess light from entering and damaging the eye too
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What organ do you use for sight?
eye
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What is the retina?
layer of cells inside the eye. It also transforms the light that enters the eye into nerve signals
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