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6. The chemical which transmits across a synapse is called acetylcholine
7. An iris controls how much light enters the eye
8. Humans have monocular version as opposed to binocular vision
9. What part of the eye focuses the light onto the retina?
10. A short sighted person will focus an image in front of the person
11. The pancreas produce what hormone- it is used to control blood sugar levels
- thyroxide
- oestrogen
- insulin
- adrenalin
12. hormones are faster than nerves
13. Nerves target a more precise area than hormones