Day 9

4. a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
5. The places where neurons connect and communicate with each otherAntibody
6. processing auditory information and with the encoding of memory
8. responsible for sending and receiving neurotransmitters
10. the immune system's way of protecting the body against an infectious disease.
11. the electrical potential of a neuron or other excitable cell relative to its surroundings when not stimulated or involved in passage of an impulse.
14. A type of white blood cell that surrounds and kills microorganisms, removes dead cells, and stimulates the action of other immune system cells.
16. The space between two neurons across which the impulse is transmitted by a neurotransmitter
17. pieces of very large cells in the bone marrow called megakaryocytes

1. The act of introducing a vaccine into the body to produce protection from a specific disease
2. endogenous chemicals that allow neurons to communicate with each other throughout the body
3. a rapid sequence of changes in the voltage across a membrane
7. allows electrical impulses to transmit quickly and efficiently along the nerve cells.
9. a bacterium, virus, or other microorganism that can cause disease.
12. a signal transmitted along a nerve fiber. It consists of a wave of electrical depolarization that reverses the potential difference across the nerve cell membranes
13. A type of blood cell that is made in the bone marrow and found in the blood and lymph tissue.
15. a short branched extension of a nerve cell, along which impulses received from other cells at synapses are transmitted to the cell body.