Across
- 3. division of the peripheral nervous system that controls the bodys skeletal muscles
- 4. wait for the neurotransmitter to wander away
- 5. send signals that stimulate the cell
- 7. short lived change in electric charge inside the neuron
- 9. division of the autonomic nervous system that arouses the body
- 11. put the neurotransmitter back in the vesicle
- 12. quickly restoring its charge by pumping out the positively charged ions and bringing back negative ones
- 15. carry signals toward the cns from the periphery
- 16. chemical messenger inside the body
- 18. determines if a stimulus is strong enough to warrant action
- 20. decreases the availability of a neurotransmitter
- 21. break the neurotransmitter apart
- 22. period where neuron is unable to have another action potential
- 23. gap separating the axon terminals from dendrites
- 25. located in the axon terminals containing neurotransmitters
- 27. central nervous system and peripheral nervous system
- 28. within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs
- 29. carry info away from the cns to the peripheral nervous system
- 30. channels in the cell membrane open up and, allowing the positively charged ions to rush in and the negative ions to rush out
- 31. chemically controls the various functions of cells tissues and organs
- 32. covers the axon of some neurons and helps speed neural impulses
- 33. branch of psychology concerned with the links between biology and behavior
Down
- 1. receive messages from other cells
- 2. division of the peripheral nervous system that regulates key involuntary functions of the body
- 6. imbalance of electrical charge that exists between the interior of electrically excitable neurons
- 8. send signals to calm the cell
- 10. division of the autonomic nervous system that calms the body
- 13. carry outgoing information from the brain and spinal cord to the muscles and glands
- 14. produce and secrete hormones
- 17. a nerve cell and the basic building block of the nervous system
- 19. secreted directly into the blood which carries them to organs and tissues of the body to exert their functions
- 20. increases the availability of a neurotransmitter
- 24. tips of the axons branches
- 26. carry incoming information from the sensory receptors to the brain and spinal cord