The neuron & the nervous system

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Across
  1. 2. are the fundamental, specialized cells of the nervous system
  2. 3. the specialized, knob-like distal endings of an axon that convert electrical signals into chemical signals
  3. 7. the body's chemical messenger network, using glands to produce hormones that travel through the bloodstream
  4. 8. Transmits information via action potentials, converting electrical signals into chemical neurotransmitters at the synapse
  5. 10. a component of the autonomic nervous system that acts as the body's rapid, involuntary "fight-or-flight"
  6. 11. a division of the autonomic nervous system responsible for the "rest and digest" functions
  7. 12. it acts as the body's primary command, control, and information processing center
Down
  1. 1. consists of all nerves outside the brain and spinal cord
  2. 4. used for voluntary control of body movements
  3. 5. a component of the peripheral nervous system that regulates involuntary physiological processes
  4. 6. allows electrical impulses to transmit quickly and efficiently along the nerve cells
  5. 9. the branched, tree-like extensions of a neuron that receive biological signals