A&P Lab, Final Exam, Exercise 26

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  1. The spinal cord gives rise to 31 pairs of ____________________.
    spinal nerves
  2. The bulge in the spinal cord that gives off nerves to the upper limbs is called the _________________.
    cervical enlargement
  3. The bulge in the spinal cord that gives off nerves to the lower limbs is called the _______________________.
    lumbar enlargement
  4. The _______________________ is a groove that extends the length of the spinal cord posteriorly.
    posterior median sulcus
  5. In a spinal cord cross section, the posterior ___________ of the gray matter resemble the upper wings of a butterfly.
    horns
  6. The cell bodies of motor are found in the ___________________ horns of the spinal cord.
    anterior
  7. The ______________________ connects the gray matter on the left and right sides of the spinal cord.
    gray commissure
  8. The __________________ in the gray commissure of the spinal cord contain cerebrospinal fluid and is continuous with the ventricles of the brain.
    central canal
  9. The white matter of the spinal cord is divided into anterior, lateral, and posterior ________________.
    funiculi
  10. The longitudinal bundles of nerve fibers within the spinal cord comprise major nerve pathways called _________________.
    nerve tracts
  11. Describe:

    Corticospinal
    descending tract whose fibers conduct motor impulses to skeletal muscles
  12. Describe:

    Fasciculus gracilis
    ascending tract to the brain to interpet touch, pressure, and body movements
  13. Describe:

    Lateral spinothalamic
    ascending tract to the brain to give rise to sensations of temperature and pain
  14. Describe:

    Posterior spinocerebellar
    ascending tract to the cerebellum necessary for coordination of skeletal muscles
  15. Describe:

    Reticulospinal
    descending tract whose fibers conduct motor impulses to sweat glands and muscles to control tone
  16. Describe:

    Arachnoid mater
    thin, weblike middle membrane
  17. Describe:

    Denticulate ligament
    band of pia mater that anchors dura mater to cord
  18. Describe:

    Dural sinus
    channel through which venous blood flows
  19. Describe:

    Dura mater
    outermost layer of meninges
  20. Describe:

    Epidural space
    seperates dura mater from bone of vertebra
  21. Describe:

    Pia mater
    follows irregular contrours of spinal cord surface
  22. Describe:

    Subarachnoid space
    contains cerebrospinal fluid

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Author:
 trulyabaker
ID:
 55159
Filename:
 A&P Lab, Final Exam, Exercise 26
Updated:
 2010-12-12 04:49:11
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Lab FinalExam Exercise26
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