body coordination

3. a nerve cell
7. branches from the cell body the receive messages from other neurones
8. the electrical message carried by a nerve cell
10. a chemical message released at the end of an axon to be received by the next neurone's dendrites
13. the lower half of the brain stem
14. the organelle where proteins are manufactured
18. the cels on which a hormone acts
20. chemical substances that act as messengers in the body
22. the chemical store of glucose in the liver and muscles
23. part of the brain where the spinal cord enters the skull
24. glands that produce hormones
25. special cells that detect stimuli
26. quick,automatic actions that protect the body from danger, they are also know as reflexes
28. nerve cells that carry messages from cells in the sense organs to the CNS
29. a hormone that has the opposite effect to insulin; it releases glucose from stores in the liver and muscles
30. a nerve fiber that sends nerve impulses away from the cell body

1. the part of the neurone that contains the necleus
2. the movement of particles of a substance from an are of high concentration to an area of low concentration
4. an organic catalyst
5. the nerve that carries messages to the brain from the retina at the back of the eye
6. endocrine glands situated on the kideys
9. the endocrine gland that controls the activities of other endocrine glands; it is often called the 'master gland'
11. the molecule that is going to be changed by a chemical reaction
12. organelles where cellular respiration occurs
15. all the endocrine glands of the body
16. the insulating layer that covers a neurone
17. the nerve pathway operating in a reflex action
19. the space between two neurones
21. any factor that stimulates a receptor and brigs about a response
27. muscles or glands that put the messages into effect