Whole of spinal cord is called
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called central nervous system
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called central nervous systems
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Spinal cord is the lower extension of the
medulla oblongata of the brain.
It lies within the neural canal of the vertebral
column and is surrounded by three
meninges.
Externally, the spinal cord appears as long
cylindrical rod.
It is 42 to 45 cm long and 2.0 to 2.5 cm
broad.
Conus medullaris: Terminal nervous part
of the spinal cord.
Filum terminale: Thread like non-nervous
extension.
31 pairs of spinal nerves arise from lateral
sides of he spinal cord.
Cauda equina - Filum terminale with some
spinal nerves running parallel to it.
(appearing like a horse-tail)
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