Unit 2 Nervous System

2. phagocytic cells that migrate throughout the CNS removing debris|
6. this type of cell forms fatty myelin sheaths around most axons in the PNs only. Also known as Neurolemmocytes.
8. This type of cell ultimately produces myelin.
11. a system with rapid activity
12. nerves
15. nervous system that refers to the collection of neurons located throughout the digestive tract
17. This type of cell supports neurons
21. This type of cell lines the ventricles and helps form the choroid plexus
22. This structure is a extension of the plasma membrane that increase the surface area available to receive stimuli and transmit stimulation towards the cell body
26. also known as sensory neuron, transmits impulses from the receptors to the CNS.
27. more than two branches
29. carry impulses from one neuron to another
30. gap between the axon terminal
31. blank conduction is nerve impulses that jump from node to node as they travel down the axon.

1. This structure connects the cell body to the axon
3. produce myelin in the CNS
4. blank potentials travel the length of the axon, causing the release of neurotransmitters into the synapse. Also known as impulses
5. allows axon to conduct impulses faster
7. clusters of brain cells
9. regulates passage of molecules from blood to the brain
10. brain and spinal cord
13. The nervous system provides control for the blank activities of the body
14. one branch of soma
16. also known as motor neuron, transmits impulses from CNS to effectors
18. smooth muscles, skeletal muscles, glands
19. a system with slow activity
20. nerve cells that send messages all over the body
23. this type of cell supports neuron cell bodies in the ganglia of the PNS
24. two branches of soma
25. Nodes of blank are gaps between segments of myelin
28. controls vital processes