Chapter 12 (3)

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Chapter 12 (3)
2012-01-23 16:34:50

Lecture test number one.
Show Answers:

  1. What is epidural space?
    • Space between dura mater and vertebral canal.
    • Contains areolar connective tissue, blood vessels, and protective adipose tissue.
  2. What supporting ligament causes prevention of lateral movement of spinal cord?
    Denticulate ligament
  3. What supporting ligament causes prevention of superior–inferior movement of spinal cord?
    Coccygeal ligament
  4. What does the posterior gray horn contain?
    somatic & visceral sensory nuclei
  5. What does the lateral gray horn contain and where is it located?
    • Only in thoracic and lumbar segments.
    • Contains visceral motor nuclei.
  6. What does the anterior gray horns contain?
    Contains somatic motor nuclei
  7. What do gray commisures contain?
    contain axons that laterally cross spinal cord.
  8. What are nuclei in the nervous system?
    Groups of cell bodies.
  9. What type of nuclei receive and relay sensory information from peripheral receptors?
  10. What type of nuclei issue motor commands to peripheral effectors?
  11. What are coulmns of white matter?
    areas of white matter on spinal cord sides.
  12. Describe the posterior white coulmn.
    Between posterior gray horns and posterior median sulcus.
  13. Describe the lateral white coulmn.
    Either side between anterior and posterior column
  14. Describe the anterior white coulmn.
    Between anterior gray horns and median fissure
  15. Describe the anterior white commisure.
    Interconnects anterior white column
  16. What are white matter tracts?
    bundle of axons relatively uniform in diameter, myelination, conduction speed, and functional type.
  17. Describe ascending tracts.
    • Carry sensory information toward brain.
    • Found in white matter.
  18. Describe descending tracts.
    • Convey motor commands to the spinal cord.
    • Found in white matter.