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Across
  1. 2. Specialized cells in every sensory system of the body that can turn other kinds of energy into action potentials (neural impulses) that the brain can process.
  2. 5. the part of the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart). Its sympathetic division arouses; its parasympathetic division calms.
  3. 8. Gap between neurons
  4. 12. Nerves that carry information from the sense receptors to the spinal cord and brain.
  5. 14. the fact that neurons fire or they don't. They do not fire with varying intensity. Intensity is the product of the rate of fire.
  6. 15. neuromodulator that blocks the effects of a neurotransmitter
  7. 16. A threadlike extension of a neuron that carries nerve impulses away from the cell body toward the terminal button
  8. 18. neuromodulator that mimics the effects of a neurotransmitter
  9. 19. The nerves that travel to the skeletal muscles of the body
  10. 21. chemical messengers that distribute messages throughout the body
Down
  1. 1. classified under the autonomic branch of your nervous system this is involved in your fight or flight response
  2. 3. classified under the autonomic branch of your nervous system this is involved in calming you down after your fight or flight response kicks in
  3. 4. Nerves that carry information from the central nervous system to the muscles of the body.
  4. 6. the actual firing of an electrical impulse down the length of a neuron
  5. 7. The time it takes a neuron to recharge to be able to fire again after an action potential
  6. 9. neurons within the brain and spinal cord that process the information coming in through the sensory nerves from the receptor cells
  7. 10. part of a neuron that sends out the chemical message to the next neuron in the chain
  8. 11. part of a neuron that receives the chemical message from the previous neuron in the chain
  9. 13. chemical messengers that pass messages from one neuron to another
  10. 17. post synaptic potentials: the positive or negative charge that fluctuates in the post synaptic neuron until the balance is off enough to trigger an action potential
  11. 20. Brain Stem and Brain