Eye - Chapter 12
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Sclera | Tough, white outer layer of the eyeball (6 muscles attach and move the eye around)
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| Cornea | colourless, transparent, front part of the sclera where light enters "window of the eye"
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| Pupil | The 'window' through which light enters the lens of the eye
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| Iris | Color ring around the pupil that contracts and relaxes regulating the amount of light entering the eye
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| Retina | Light rays converge here
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| Rods | Sensitive to bright light
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| Cones | Sensitive to colour
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| Optic Nerve | Nerve that transmits signals from the retina of the eye to the brain for interpretation
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| Blind Spot | area of the retina where the optic nerve and blood vessels connect - there are no rods or cones there
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| Ciliary Muscles | Bands of muscles behind the pupil that holds the lens in place
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| Normal Vision | Normal vision is 6/6 which indicates what can normally be seen at 6 metres.
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| Refractive Vision Problems | Vision defects that prevents an eye from focusing an image properly on the retina
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| Aqueous Humor | Directly behind the corneo in a transparent liquid
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| Lens | Thick double-convex tissue
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| Vitreous Humor | Behind the lens is a transprent jelly-like material
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| List in order the refracting parts of the eye (4 things) | 1. Cornea, 2. Aqueous Humor, 3. Lens, 4. Vitreous Humor
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| Retina is made up of two kinds of nerve cells: | Rods and Cones
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| We actually "See" with what organ? | The brain
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| Myopia | Can see nearby things but not distant objects
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| Hyperopia | Can see distant objects clearly but have trouble focussing on object close up
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| Astigmatism | A condition in which the corenea has a irregular curve.
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| Additive colour mixing | Process of adding together colours of light to produce other colours
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| Primary light colours | red, blue and green
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| Secondary light colours | created when primary light colours are combined - magenta yellow and cyan
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| Complementary light colours | Any two colours of light that produce white light when added together
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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