Basic building blocks of the nervous system

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Across

3. Mechanism by which harmful substances are prevented from reaching the brain, e.g. toxins (5-5-7)

6. Blood-brain barrier guides neurons as they migrate from ....(4-2-8) to final position within ....(5)

11. NS basic building blocks (5)(6-4)(6)(7)

14. ....(4) appendage of cell along which information is carried (neuron part)

16. CNS serves as the ....(10-5) of ....(5-8)

18. CNS encased in ....(4)

20. Main parts of neurons (9-4)(4-4)(4)

21. Blood-brain barrier creates ....(8) obstruction that keeps toxins, nutrients, drugs and (6-6-5) from directly reaching the ....(7-6)

24. Cell body contains ....(7) and other apparatus responsible for ....(13-8), and ....(7) that sustain cell functioning (neuron part)

27. Connects all parts of body to CNS (abbrev.)

28. Motorneurons send info from ....(5) and ....(6-4) to ....(7) (neuron type)

29. NS controls body's response to .... (8) and ....(8) stimuli

30. Main types of neurons (7-7)(12)(5-7)

Down

1. PNS e.g. neurons that receive ....(7-11) or that send info to ....(7) and those that ....(5) info to or from ....(6) or the ....(5)

2. All neural tissue beyond CNS ....(10)

4. Glia aid with ....(14) after brain damage by ....(8-4-7)

5. Glia influence ....(13) between neurons by modifying ....(8-7) between them

7. Glia serve some ....(9) needs of neurons and provide ....(10-7)

8. Collection point of nerve impulses (abbrev.)

9. PNS connects ....(3-5-2-3-4) to the ....(7-7-6)

10. Sensory neurons bring info to.... (abbrev.) (neuron type)

12. Blood-brain barrier consists of tightly packed ....(4-5) between ....(5-7) and ....(7)

13. Glia critical to maintaining ....(5-5-7)

15. Brain and spinal cord ....(7)(7)(6)

17. ...(12) associate info within CNS (neuron type)

19. Neurons carry info by means of ....(10) and ....(8) signals

22. NS main classes of cells ....(7) and ....(4)

23. ....(9-4) receives input from other cells (neuron part)

25. Carriers of information

26. Support cells

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