Unit 2 Nervous System

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Across
  1. 2. phagocytic cells that migrate throughout the CNS removing debris|
  2. 6. this type of cell forms fatty myelin sheaths around most axons in the PNs only. Also known as Neurolemmocytes.
  3. 8. This type of cell ultimately produces myelin.
  4. 11. a system with rapid activity
  5. 12. nerves
  6. 15. nervous system that refers to the collection of neurons located throughout the digestive tract
  7. 17. This type of cell supports neurons
  8. 21. This type of cell lines the ventricles and helps form the choroid plexus
  9. 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
  10. 26. also known as sensory neuron, transmits impulses from the receptors to the CNS.
  11. 27. more than two branches
  12. 29. carry impulses from one neuron to another
  13. 30. gap between the axon terminal
  14. 31. blank conduction is nerve impulses that jump from node to node as they travel down the axon.
Down
  1. 1. This structure connects the cell body to the axon
  2. 3. produce myelin in the CNS
  3. 4. blank potentials travel the length of the axon, causing the release of neurotransmitters into the synapse. Also known as impulses
  4. 5. allows axon to conduct impulses faster
  5. 7. clusters of brain cells
  6. 9. regulates passage of molecules from blood to the brain
  7. 10. brain and spinal cord
  8. 13. The nervous system provides control for the blank activities of the body
  9. 14. one branch of soma
  10. 16. also known as motor neuron, transmits impulses from CNS to effectors
  11. 18. smooth muscles, skeletal muscles, glands
  12. 19. a system with slow activity
  13. 20. nerve cells that send messages all over the body
  14. 23. this type of cell supports neuron cell bodies in the ganglia of the PNS
  15. 24. two branches of soma
  16. 25. Nodes of blank are gaps between segments of myelin
  17. 28. controls vital processes