Lumbosacral Plexus |
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| Plexus, Lumbar; Plexus, Lumbosacral; Plexus, Sacral | |
| The lumbar and sacral plexuses taken together. The fibers of the lumbosacral plexus originate in the lumbar and upper sacral spinal cord (L1 to S3) and innervate the lower extremities. | |