What are the two major nerves of the sacral plexus?

Online Answer
The plexus is formed by the anterior rami (divisions) of the sacral spinal nerves S1, S2, S3 and S4. It also receives contributions from the lumbar spinal nerves L4 and L5. In this article, we shall look at the anatomy of the sacral plexus – its formation and major branches..
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