Cells and Neurons

1. small structures that play different roles in keeping the cell alive
4. are the sites of protein production
7. a white, fatty covering that helps insulate the axon of one neuron from others
10. generate most of the chemical energy needed to power the cell's functions
12. tiny structures which are also found in the cytoplasm.
16. organisms whose cells are organized into complex structures by internal membranes and a cytoskeleton
17. contains DNA, which controls the cell's activities. Is the control centre of the cell
19. transport network of sacs that manufactures, processes, and transports chemical compounds
20. break down cellular waste products and debris from outside the cell
21. Extension of a neuron that receives information from other neurons and transmits it to the soma
23. the gap between neurons, the synapse includes the axon terminals from the presynaptic neuron all the way down to the dendrites of the post synaptic neuron
24. The important job of carrying oxygen from the lungs to all parts of the body is done by
26. non-neuronal cells that do not produce electrical impulses. They maintain homeostasis, form myelin and provide support and protection for neurons.

2. Combines the neural information from dendrites and sends it to the axon
3. is a cell that sends and receives information in the form of electrochemical signals
5. The important job of absorbing the water is performed by specialized cells called
6. an unconscious, involuntary and automatic response to certain stimuli. This is done without the involvement of the brain
8. Transmits message from Soma to other cells in body (neurons, organs, muscles)
9. carries messages away from the central nervous system, towards the muscles
11. cells found only in the CNS that act as a
13. that detects and sends messages from the sense organs and sense receptor sites to higher brain centres
14. organisms without a cell nucleus, or any other membranebound organelles
15. a permeable membrane that provides protection for the cell
18. storing the energy from food for future use
22. the body's raw materials — cells from which all other cells with specialized functions are generated
25. distribution and shipping department for the cell's chemical products