How much of a brain expert are you?

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Across
  1. 3. "little brain" attached to the rear of the brainstem and it helps coordinate voluntary movement and balance.
  2. 5. scan/A series of x-ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body.
  3. 7. extensions of a neuron that receive messages and conduct impulses toward the cell body.
  4. 8. base of the brainstem, which controls heartbeat and breathing.
  5. 11. Period/The time after a neuron fires or a muscle fiber contracts during which a stimulus will not evoke a response.
  6. 15. messengers that traverse the synaptic gaps between neurons.
Down
  1. 1. Formation/A nerve network in the brainstem that plays an important role in controlling arousal.
  2. 2. amplified recording of the waves of electrical activity that sweep across the brain's surface. These waves are measured by electrodes placed on the scalp.
  3. 4. that uses magnetic fields and radio waves to produce computer-generated images that distinguish among different types of soft tissue and allows us to see structures within the brain.
  4. 6. nerve cell or the basic building block of the nervous system.
  5. 9. neural structure lying below the thalamus, which directs eating, drinking, body temperature. Also helps govern the endocrine system via the pituitary gland, and is linked to emotion.
  6. 10. neural center located in the limbic system that helps process explicit memories for storage.
  7. 12. a computerized radiographic technique to examine the metabolic activity in various tissues.
  8. 13. Potential/Electrical charge across the cell membrane of a resting neurone.
  9. 14. Potential/A neural impulse, or a brief electrical charge that travels down an axon.
  10. 16. gaps between dentrites and axons of different neurons.
  11. 17. Nervous System/The brain and spinal cord.