Science Revision - Body Systems

3. – Made up of tissue.
7. – Made up of organs.
8. – The organ used for sight.
12. – An involountary action caused by stimuli almost instantly.
13. – The organ used for smell.
15. – A nerve cell.
17. – Causes a response from stimuli.
19. – The main part of the cell.
20. – The neurons that pick up stimuli.
22. – A fat layer that covers the axon, controls the path of the axon.
25. – The action caused by the effectors.
26. – Controls the amount of light entering the eye.
27. – The organ used for taste.
28. – Any information that the body receives that causes the body to respond.

1. – Nervous system made up of all the nerves outside of the CNS.
2. – Link sensory and motor neurons together.
4. – Nerve endings that branch out of the cell body.
5. – Carries the nerve impulse away from the cell body.
6. – Bends the incoming light.
9. – Changes light into nerve signals.
10. – The basic building blocks of all living things.
11. – Focuses the incoming light to the back of the eye.
14. – Small gap separating neurons, of which information from one cell flows to another.
16. – A structure that detects a stimuli or change in the norml functioning of the body.
17. – The organ used for hearing.
18. – Part of the CNS works together with the brain.
21. – The neurons that cause a response.
23. – Made up of cells.
24. – The processing centre of the body.
28. – The organ used for touch.