Across
- 2. produce and secrete hormones into the body
- 4. covers the axon and helps speed neural impulses
- 5. intersection between the axon tip of sending neurons and dendrite of receiving neuron
- 7. a nerve cell
- 8. a chemical that decreases the availability of a neurotransmitter
- 9. carry outgoing information from brain/spinal cord to the muscles/glands
- 11. passes messages away from the cell body to other neurons, muscles, or glands
- 13. controls the body's skeletal muscles
- 16. communicate internally and intervene between sensory/motor outputs
- 18. consists of the autonomic and somatic systems
- 19. a chemical increases the availability of neurotransmitters to a reaction
- 20. carry information away from the central nervous system
Down
- 1. chemical messenger inside body
- 3. carry signals toward the central nervous system from the periphery
- 6. how neurons communicate
- 10. chemically controls the various functions of cells tissues and organs
- 12. carry incoming information to the brain/spinal cord
- 14. the cell's life support center
- 15. store of potential energy
- 17. receive messages from other cells