Across
- 2. messengers that are carried through the blood to organs and tissues
- 4. electrical signals used for communication through cell stimulation
- 7. when a neuron tries to restore its charge
- 8. secrete hormones throughout bodies
- 12. travels to connect the central nervous system to muscles and organs efferently
- 13. controls the body's skeletal muscles
- 15. helps the body cope with stresses
- 17. a neurotransmitter or mimicked one that stops the removal of neurotransmitters from the synapse
- 19. calms the body and conserves energy
- 20. in the brain and spinal cord and communicate internally
- 21. a chemical messenger that sends messenges between neurons
Down
- 1. send signals to stimulate cells
- 3. arouses the body and mobilizes energy
- 5. regulates the body's metabolism, blood pressure, heart rate, and more bodily functions
- 6. send signals to calm cells
- 9. connect receptors to central nervous system afferently
- 10. produces hormones that control the enocrine's functions
- 11. broken down into two systems that deal with connecting the central nervous system
- 14. broken down into two systems that deal with both skeletal responses and involuntary functions
- 16. chemical of drug that can bind to receptors in order to decrease the neurotransmitter's abilities
- 18. regulates the involuntary functions within the body