Unit Two Vocab
Across
- 2. axon is so negative it will not reach action potential.at rest
- 5. controls voluntary movements of skeletal muscles
- 6. neuron tries to restore charge by pumping out positive ions and bringing in negative ones
- 7. made up of brain and spinal cord
- 10. neuron within brain and spinal cord that communicate internally
- 12. life support center of neuron
- 14. gap between axon terminals and dendrites
- 17. part of neuron that passes messages away from cell body to neurons,muscles, or glands
- 18. chemical messengers secreted into blood to organs and tissues
- 19. slightly negative charge inside neuron acting as a store of potential energy
- 20. carry outgoing info from brain and spinal cord to muscles and glands
- 22. nerve cells.basic build block of nervous system
- 23. part of neuron that receives messages from other cells
Down
- 1. carry information from sensory receptors to brain and spinal cord
- 3. neural impulses either fire and generate action potential or doesnt do anything
- 4. autoimmune disease attacking myelin sheath
- 8. psychology linking biology and behavior
- 9. sends signals to calm cell and not fire action potential
- 11. fatty covering of axon that speeds up neural impulses
- 13. sends signals to excite cell and fire action potential
- 15. controls selfregulated action of internal organs and glands
- 16. determines if a stimulus is strong enough to warrant action
- 21. based of movements of ions between inside and outside of neuron