Day 4 crossword puzzle

4. A type of white blood cell that surrounds and kills microorganisms, removes dead cells, and stimulates the action of other immune system cells
5. the state or quality of being resistant to a particular infectious disease or pathogen
6. Potential a rapid sequence of changes in the voltage across a membrane
8. the finger-like cells present on the end of a neuron
9. Any substance that causes the body to make an immune response against that substance
10. An antibody, also known as an immunoglobulin, is a large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses
14. a small colorless disk-shaped cell fragment without a nucleus, found in large numbers in blood and involved in clotting.
15. the fundamental units of the brain and nervous system
16. sheath an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord
17. asymmetric intercellular junctions that mediate rapid point-to-point communication between neurons, and thereby connect neurons into circuits
18. Impulse the relaying of a coded signal from a nerve cell to an effector (a muscle cell, a gland cell or another nerve cell) in response to a stimulus

1. Lobe sit behind the ears and are the second largest lobe
2. treatment with a vaccine to produce immunity to a particular infectious disease or pathogen
3. chemical messengers that your body can't function without
7. a colorless cell that circulates in the blood and body fluids and is involved in counteracting foreign substances and disease
11. cleft a small gap between the axon terminal of the presynaptic neuron and the membrane of the postsynaptic cell
12. an organism causing disease to its host
13. Potential the amount of power that is available to a cell to maintain its homeostatic state