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The nerve plexuses are formed from cervical, lumbar, and sacral areas of the spinal cord.
Cervical, lumbar, and sacral areas are used to make the nerve plexus. The cervical plexus is composed of axons from spinal nerves C1 through C5, the brachial plexus comes from spinal nerves C4 through T1, the lumbar plexus arises from all the lumbar spinal nerves, and the sacral plexus comes from lower lumbar nerves L4 and L5 and sacral nerves S1 to S4.
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