Across
- 8. the sensory/motor neurons that connect the CNS to rest of body
- 9. Neurons that carry outgoing information from brain/spinal cord to muscles/glands (efferent)
- 10. natural, opiate-like neurotransmitters linked to pain control and to pleasure
- 11. system electrochemical communication network; consists of nerve cells of peripheral and central nervous system
- 14. the division of peripheral nervous system that controls body's skeletal muscles
- 18. neurons within the brain/spinal cord that communicate internally between sensory inputs/motor outputs
- 19. a simple,automatic response to a sensory stimulus
- 20. Fatty tissue layer;greater transmission speed. Without it,can cause Multiple Sclerosis
- 22. A neuron's reaction either firing (With a full-strength response) or not firing
- 23. Synaptic gap/synaptic cleft; the junction between the axon tip of the sending neuron and dendrite
- 25. Level of stimulation required to trigger a neural impulse
Down
- 1. Peripheral nervous system that controls the glands and muscles of internal organs (Sympathetic/Parasympathetic)
- 2. division of the autonomic nervous system that calms the body
- 3. a neurotransmitter's reabsorption by the sending neuron
- 4. the brain and the spinal cord
- 5. Chemical messengers
- 6. a psychologist who divided brains of animals (studied corpus callosum/splitting the brain)
- 7. Period A period of inactivity after a neuron has fired
- 12. A neural impulse; electrical charge
- 13. A nerve cell
- 15. Receives messages and conducts impulses toward the cell body
- 16. division of the autonomic nervous system that arouses the body
- 17. The neuron extension that passes messages through it's branches to other neurons/muscles/glands
- 21. Neurons that carry incoming information from sensory receptors to brain/spinal cord (Afferent)
- 24. A molecule that, by binding to a receptor site, stimulates a response