spinal cord

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Across
  1. 3. Crutch paralysis is seen in injury of the ___________ nerve
  2. 4. The varicella-zoster virus causes ___________ and is kept in check by the immune system
  3. 5. tracts carry motor signals from cerebral cortex to lower motor neurons axons that lead to muscle
  4. 8. Neurons in ______ tracts travel from gray matter to thalamus to destinations in the sensory region of cerebral cortex.
  5. 10. Reflexes include ______________ and contraction of cardiac, skeletal, and smooth muscle
  6. 11. The crossed extension reflex uses a _______________ reflex arc.
  7. 13. A spinal nerve branches into an anterior __________ to form five nerve plexuses
  8. 16. Below L2, the vertebral canal is occupied by a bundle of spinal nerves roots called ________________
  9. 18. Dermatomes overlap their edges by ______%
  10. 19. A woman can reduce the risk of Spina bifida by taking ______
  11. 20. The _____ horn contains neurons of sympathetic nervous system, which send their axons out of the cord by way of anterior root along with the somatic efferent nerves.
  12. 22. Historically, _____ affected many children who contacted the virus from swimming
  13. 23. Amyotrophic lateral sclerosis (ALS) or Lou Gehrig is caused by the accumulation of
Down
  1. 1. Some ___________ reflexes are mediated primarily through the brainstem and cerebellum
  2. 2. travels down the sensory nerves by fast axonal transport when immune system is compromised
  3. 6. The flexor (withdrawal) reflex triggers contraction of the flexors and relaxation of the extensors in that limb uses an _______________ reflex arc.
  4. 7. The ________ plexus is associated with sciatica.
  5. 9. The _____________ nerves arise from the cervical plexus and innervate the diaphragm
  6. 12. The most serious permanent effect of spinal cord trauma is ______________
  7. 14. The median nerve is associated with the _____________ plexus
  8. 15. The _________ plexus in the lower back supply the abdominal wall and genitalia
  9. 17. The _____________ ganglion contains the somas of neurons that carry sensory signals to the spinal cord.
  10. 21. The anterior and posterior horns of the spinal cord are composed of ______ matter