The eye

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Human nervous system
Receptor - is stimulated, we have receptors sensitive to sight, touch and sound.

Coordinator - information from the receptor is carried to the central nervous system (brain, spinal cord) which determines what response must be made.

Effector - produces the response

The eye

  • ciliary body: contracts or relaxes to alter shape of the lens
  • cornea: transparent cover that does most light refractions


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