body coordination

2. the part of the neurone that contains the necleus
5. the nerve pathway operating in a reflex action
10. the electrical message carried by a nerve cell
12. chemical substances that act as messengers in the body
15. the molecule that is going to be changed by a chemical reaction
21. a nerve fiber that sends nerve impulses away from the cell body
22. organelles where cellular respiration occurs
24. endocrine glands situated on the kideys
25. quick,automatic actions that protect the body from danger, they are also know as reflexes
26. all the endocrine glands of the body
27. special cells that detect stimuli
29. a nerve cell
30. muscles or glands that put the messages into effect

1. the lower half of the brain stem
3. the nerve that carries messages to the brain from the retina at the back of the eye
4. the movement of particles of a substance from an are of high concentration to an area of low concentration
6. any factor that stimulates a receptor and brigs about a response
7. the insulating layer that covers a neurone
8. glands that produce hormones
9. nerve cells that carry messages from cells in the sense organs to the CNS
11. an organic catalyst
13. the endocrine gland that controls the activities of other endocrine glands; it is often called the 'master gland'
14. a chemical message released at the end of an axon to be received by the next neurone's dendrites
16. the cels on which a hormone acts
17. the chemical store of glucose in the liver and muscles
18. part of the brain where the spinal cord enters the skull
19. a hormone that has the opposite effect to insulin; it releases glucose from stores in the liver and muscles
20. branches from the cell body the receive messages from other neurones
23. the organelle where proteins are manufactured
28. the space between two neurones