Nervous System

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Across
  1. 4. Area of skin innervated by a single spinal nerve
  2. 7. Type of motor neuron that adjusts sensitivity of muscle spindles
  3. 10. Glial cell responsible for myelination in the PNS
  4. 13. Type of reflex with only one synapse between sensory and motor neurons
  5. 15. Motor system that controls voluntary movement of skeletal muscles
  6. 18. Myelin-producing cell in the CNS
  7. 23. Basic functional cellular unit of the nervous system
  8. 25. Direction of neural signaling traveling toward the CNS
  9. 27. Direction of neural signaling traveling away from the CNS
  10. 30. Sensory receptor that detects potentially damaging or painful stimuli
  11. 31. Major ascending tract that transmits pain and temperature
  12. 32. Division of the autonomic nervous system responsible for rest and digest
  13. 34. Type of motor neuron that innervates extrafusal muscle fibers
  14. 36. Mechanism by which visceral and somatic afferents share spinal neurons
  15. 39. Division of the autonomic nervous system responsible for fight or flight
  16. 40. Nerves that carry autonomic fibers to abdominal and pelvic viscera
Down
  1. 1. Neuronal process specialized for receiving incoming signals
  2. 2. Spinal horn where motor neurons reside
  3. 3. Sensory receptor within skeletal muscle that detects changes in muscle length
  4. 5. Bundle of axons located within the CNS
  5. 6. Nerves and ganglia outside the brain and spinal cord
  6. 8. Neuronal process that carries electrical signals away from the cell body
  7. 9. Collection of neuronal cell bodies located within the PNS
  8. 11. Unmyelinated fiber that transmits slow dull pain
  9. 12. Bundle of axons located within the PNS
  10. 14. Brainstem region involved in descending pain modulation
  11. 15. Neurotransmitter released by the raphe nuclei during pain inhibition
  12. 16. Autonomic neuron that extends from a ganglion to a target organ
  13. 17. Type of reflex initiated by muscle spindle activation
  14. 19. Spinal horn where sensory neurons synapse
  15. 20. Type of pain felt at a site distant from its actual origin
  16. 21. Insulating material surrounding certain axons that increases conduction velocity
  17. 22. Supports neurons and helps form the blood-brain barrier in the CNS
  18. 24. Autonomic neuron that extends from the CNS to an autonomic ganglion
  19. 26. Gap between adjacent segments of myelin along a myelinated axon
  20. 28. An automatic motor response to a sensory stimulus
  21. 29. Term for motor or sensory functions involving internal organs
  22. 33. Myelinated fiber that transmits sharp localized pain
  23. 35. Motor system that regulates smooth muscle cardiac muscle and glands
  24. 37. Type of endogenous opioid that modulates pain
  25. 38. Brain and spinal cord make up this division of the nervous system