Day 9 Vocabulary Assignment

5. receive stimulus and carries it impulses toward the cell body
8. a rapid rise and subsequent fall in voltage
10. the electrical potential of a neuron or other excitable cell relative to its surroundings when not stimulated or involved in passage of an impulse.
11. Basic functional cell of nervous system
14. a large phagocytic cell found in stationary form in the tissues or as a mobile white blood cell, especially at sites of infection
15. the space between neurons at a nerve synapse across which a nerve impulse is transmitted by a neurotransmitter
17. mall gap or space between the axon of
19. a chemical substance that is released at the end of a nerve fiber by the arrival of a nerve impulse

1. A stimulus is a change in the environment with sufficient strength to initiate a response
2. cell that circulates in the blood
3. dense lipid layer which insulates the axon makes the axon look gray
4. the quality or state of being immune
6. One class of non-self molecules
7. a bacterium, virus, or other microorganism that can cause disease.
9. neuron and the dendrite of another
12. treatment with a vaccine to produce immunity against a disease
13. one of the four major lobes of the cerebral cortex
16. a blood protein produced in response to and counteracting a specific antigen
18. pieces of very large cells in the bone marrow