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Exam (elaborations)

GCSE Biology- The Eye Exam Questions and Answers

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cornea - ANSWER-refracts light and protects eye iris - ANSWER-controls how much light enters eye lens - ANSWER-focuses light onto retina optic nerve - ANSWER-carries impulses to brain retina - ANSWER-layer of tissue at the back of the eye that contains photoreceptor cells sclera - ANSWER-tough outer layer vitreous humour - ANSWER-maintains shape of eye aqueous humour - ANSWER-maintains pressure in eye and nourishes cornea ciliary muscles - ANSWER-change shape of lens for accommodation rod cells - ANSWER-detect black and white cone cells - ANSWER-detect color, need bright light accommodation - distant object - ANSWER-ciliary muscles contract, suspensory ligaments tighten, lens is pulled thin accommodation - close object - ANSWER-ciliary muscles relax, suspensory ligaments slacken, lens becomes fatter

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Institution
GCSE
Course
GCSE

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Uploaded on
April 10, 2024
Number of pages
1
Written in
2023/2024
Type
Exam (elaborations)
Contains
Questions & answers

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  • gcse biology the eye exam questions and answers
  • cornea answer refracts light and protects eye

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GCSE Biology- The Eye Exam Questions
and Answers
cornea - ANSWER-refracts light and protects eye

iris - ANSWER-controls how much light enters eye

lens - ANSWER-focuses light onto retina

optic nerve - ANSWER-carries impulses to brain

retina - ANSWER-layer of tissue at the back of the eye that contains photoreceptor cells

sclera - ANSWER-tough outer layer

vitreous humour - ANSWER-maintains shape of eye

aqueous humour - ANSWER-maintains pressure in eye and nourishes cornea

ciliary muscles - ANSWER-change shape of lens for accommodation

rod cells - ANSWER-detect black and white

cone cells - ANSWER-detect color, need bright light

accommodation - distant object - ANSWER-ciliary muscles contract, suspensory
ligaments tighten, lens is pulled thin

accommodation - close object - ANSWER-ciliary muscles relax, suspensory ligaments
slacken, lens becomes fatter
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