DAC Nervous System

2. Helper cells that are able to divide
5. Middle meninges mater that resembles a spider web
6. Sends out signal
11. Type of neuron that sends signals to parts of the body that will respond (like muscles)
12. These branches receive incoming chemical signals (plural)
14. System that regulates involuntary responses in smooth and cardiac muscle
15. An insulating sheathe that helps speed things up
17. Receives signal
20. Go! Go! Go! It's fight of flight
21. Type of matter found deep in the brain primarily made of axons
22. Where synapse occurs between a sensory and motor neuron (2 words, no space)
25. Somatic nervous system sens impulses to this type of muscle
26. Ion that triggers the release of neurotransmitters
28. Type of fluid that carries oxygen and carbon dioxide and acts as a cushion

1. Most sensory neurons in the PNS are this
3. Something that responds to a signal by doing something
4. ANS branch involved i resting and digesting
7. Neurotransmitters pass through here
8. One of the two organs that contain sensory receptors from the ANS
9. Not of the brain or spinal cord
10. Part of the nervous system that is voluntary
13. This type of signal cannot typically be passed from cell to cell
16. Contains the hypothalamus and pituitary
18. type of reflex when integration takes place in brain stem rather than grey matter
19. Structure along which an action potential passes
23. This flows into the neuron during depolerization
24. Largest part of the brain, divided into 2 hemispheres
27. Integrative control center (abbreviation)