Check out this terrific educational video series on the anatomy of the lumbosacral plexus of the human body. You'll learn about the anterior divisions of the lumbar nerve, sacral nerve, and coccygeal nerves, which form the lumbosacral plexus. This anatomy filled video will cover the lumbar plexus, sacral plexus, and the pudendal plexus. There's so much to learn from this that I can't even try to write it all down. Just be sure that you could be one hell of biologist if you watch. Maybe even a physiologist, or whatever.
This is very informative for medical students in need of anatomy instructional videos.