Nervous System Physiology

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Across
  1. 3. Includes the brain and spinal cord of dorsal body cavity
  2. 10. activation of effector organs (muscles and glands) produces a response
  3. 11. Branched cells that wrap neurons of the CNS
  4. 12. Line the central cavities of the brain and spinal column Form a permeable barrier between cerebrospinal fluid in cavities and tissue of the brain and spinal cord
  5. 13. Processing and interpretation of sensory input
  6. 14. “Fight or Flight”…or Freeze
  7. 15. Consists mainly of nerves that extend from the brain and spinal cord
  8. 17. Surround and support neuron cell bodies in PNS
  9. 18. has two divisions: Somatic Nervous System & Autonomic Nervous System
  10. 19. Small, ovoid cells with thorny processes that touch and monitor neurons Migrate toward injured neurons
Down
  1. 1. Somatic motor nerve fibers conduct impulses from CNS to skeletal muscle Voluntary,conscious control of skeletal muscles
  2. 2. Surround all peripheral nerve fibers and form myelin sheaths in thicker nerve fibers
  3. 4. Visceral sensory fibers convey impulses from _______ to the CNS
  4. 5. Information gathered by sensory receptors about internal and external changes
  5. 6. Consists of visceral motor nerve fibers Involuntary control of smooth muscle, cardiac muscle, and glands
  6. 7. excitable cells that transmit electrical signals
  7. 8. “Rest and Digest”
  8. 9. small cells that surround, support, and/or wrap delicate neurons
  9. 16. Somatic sensory fibers convey impulses from ______, skeletal muscles, and joints to the CNS