Electrochemical Signals

3. Stimulus must exceed the threshold potential for the complete response of nerve; otherwise, there is no response (Four word, no space or -)
4. The change in membrane potential that returns it to a negative value just after the depolarization phase
6. Cell undergoes a shift in electric charge distribution, resulting in a more positive charge inside the cell
10. Chemical messengers that transmit a message from a nerve cell across the synapse to a target cell
12. Receive the signals and transmit them toward the cell body
15. Causes cell membranes to be excited
16. An autoimmune disease in which the immune system attacks myelin sheaths (Two word, no space)
19. A neuron sends information down an axon, away from the cell body (Two words, no space)

1. The gates that close when the cell membranes are excited and the sodium gates are open
2. Gets excited by Stimulus(Three word, no space)
4. Short time after repolarization where sodium-potassium pump is restoring the resting potential(Two word, no space)
5. Conducts electrical signals away from the cell body to another neuron or an effector
7. Terminal that receives information from presynaptic terminal
8. How information is transmitted along the neuron and throughout the nervous system (Two word, no space)
9. Type of ions diffuse into the cell down a concentration gradient during depolarization
11. Increases the speed of conduction (Two word, no space)
13. Store various neurotransmitters that are released at the synapse
14. Impulse conduction is slower (Two word, no space)
17. Gap between Neurons
18. Terminal where information arrives in the form of an action potential and is transmitted to the postsynaptic cell