biology receptors

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Across
  1. 4. back of the eye which is sensitive to light
  2. 6. vitamin which aids production of rhodopsin
  3. 7. causing cell to become active and transmit electrical signal
  4. 8. photosensitive chemical needed to see color
  5. 9. photosensitive chemical needed to see light
  6. 10. nerve which carries impulse to brain
  7. 12. convert light energy to electrical nerve impulse
  8. 13. resolution of the image you perceive
  9. 14. several rod cells signaling to one bipolar neurone
  10. 15. all signals from rod cells added together
Down
  1. 1. part of the eye which focuses incoming light onto retina
  2. 2. cell which carries nerve impulse to optic nerve
  3. 3. change in potential difference in response to stimulus
  4. 5. receptor that converts stimulus into nerve impulse
  5. 11. hole in eye which light passes through