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neurology

spinal cord

QuestionAnswer
Nervous system develops from ectoderm alar plate will become interneurons (connections between motor and sensory neuronos) basal plate will become motor neurons
31 pairs of spinal nerves ganglion-outside brain and spinal cord
CNS tissue is enclosed within the vertebral column from the foramen magnum to L1 cauda equina--collection of nerve roots at the inferior end of the vertebral canal.
Brachial plexus C4-T1 Lumbar plexus l1-l3 sacral plexus denticulate ligaments keep roots separate
Internal structure of spinal cord...canal, white matter, gray matter. Two swellings; cervical enlargement arms/legs and lumbo sacral for leg foot and pelvic viscera. White matter increases to the brain sa more axoons are added and decreases from the brain.
Created by: Yoshinao
 

 



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