The Eye 0.0 / 5 ? BiologyCells, tissues and organsIGCSEEdexcel Created by: dulcieeverittCreated on: 23-12-13 13:52 the ? retracts light into the eye Cornea 1 of 24 the ? controls the diameter of the pupil and how much light goes into the eye Iris 2 of 24 The ? regulates the light level within the retina Pupil 3 of 24 The ? focuses light onto the retina Lens 4 of 24 the ? ? adjust the shape of the lenses in order to focus the eye ciliary muscle 5 of 24 The ? ? holds the lens in position and changes the focus of the lens Suspensory ligament 6 of 24 The ? is the light sensitive part of the eye retina 7 of 24 Rods are more ? in dim light sensitive 8 of 24 Rods can't sense ? colour 9 of 24 cones are sensitive to colour but aren't good in ? light Dim 10 of 24 Cones are found in the ? and at the ? Retina, fovea 11 of 24 the ? is a protective envelope of leathery connective tissue and is the white coating on the outside of the eyeball sclera 12 of 24 the ? is the focus point for light entering the eye fovea 13 of 24 the ? ? carries impulses from the receptors to the brain Optic nerve 14 of 24 the ? lubricates and protects the surface of the eye conjunctiva 15 of 24 If you are long sighted you are unable to focus on ? objects near 16 of 24 if you are short sighted you are unable to focus on ? objects distant 17 of 24 Images of near objects are brought into focus ? the retina behind 18 of 24 distant images are focused in the ? of the retina front 19 of 24 Very bright light can damage the ? retina 20 of 24 you have an ? ? to protect the retina iris reflex 21 of 24 bright light triggers a reflex action that makes the pupil ? smaller 22 of 24 in dim light the ? ? contract making the pupil bigger to let as much light in as possible Radial muscles 23 of 24 In bright light the ? ? contract circular muscles 24 of 24
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