1) What happens to light when it hits a transparent medium? 2) What is the name of the muscle that controls the shape of the lens? 3) What are the names of the two muscles found in the iris 4) Which muscle in the iris contracts when the pupil dilates? 5) Which muscle in the iris contracts when the pupil constricts 6) When you view an object at a distance, what shape does you lens need to be to focus an image? 7) When you view a close object, what shape does your lens need to be to focus an image? 8) When the ciliary muscle contracts, what happens to the suspensory ligaments? 9) When the ciliary muscle relaxes, what happens to the suspensory ligaments? 10) What is the function of the choroid? 11) Where are the light receptors found in the eye? 12) Where would you find the blind spot in the back of the eye? 13) What structure of the eye is similar to a screen protector on your mobile phone? What is its function? 14) What part of the eye will the lens try to focus the image on? 15) What is the Biological name for focussing an image on the back of the eye? 16) What type of neurones will you find in the optic nerve?

Structure and function of the Eye

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