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Across 5. Process which carries impulses away from the cell body 6. Generation of new neurons 9. Type of nerve cell which transmits information away from the CNS 10. Segmented covering on many axons which increases the speed of nerve impulse transmission 11. Type of neuron where axons and dendrites cannot be visually differentiated 14. The ability to conduct a signal 19. Neuroglia which have cilia used to circulate cerebrospinal fluid 20. Type of neuron with at least three process, and is the most numerous 23. Part of nervous system which is the control system and comprised of the brain and spinal cord 25. Neuroglia which engulfs microorganisms and dead neural tissue 26. Portion of the nervous system connecting to smooth muscle, heart, organs, and glands that controls involuntary actions 27. Portion of the nervous system responsible for resting and digesting 28. Part of the brain responsible for monitoring heart rate, blood pressure, CO2 levels, and respiration

Down 1. Type of neuron where dendrite directly joins the axon, mostly sensory 2. Short processes which receive nerve impulses from other nerve cells 3. Bare spots on the axon where action potentials can be stimulated 4. Neuroglia surrounding cell bodies in the PNS 5. Type of nerve cell which receive and transmit information to the CNS 7. Neuroglia which produces the myelin sheath around nerves in the PNS 8. Part of the brain responsible for monitoring body temperature, blood pressure, and heart rate 12. Type of neuron with one axon and one dendrite, found mostly in sense organs 13. Portion of the nervous system which prepares the body for action like the flight-or-fight response 15. Portion of the cell containing the nucleus and cell's machinery 16. Portion of the nervous system connecting to skeletal muscles that controls voluntary actions 17. Neuroglia which produces the myelin sheath around axons in the CNS 18. Neuroglia involved in the immune system, maintaining level of potassium in the brain, and levels of neurotransmitters 19. The ability to respond to a stimulus and convert the stimulus into a nerve impulse 21. Cells which support and protect neurons 22. Part of nervous system which forms the connection between the CNS and receptors, muscles, organs, and glands 24. Any condition in the environment capable of altering the membrane potential