Sacral Plexus | Roots, Branches, & Innervation

The video tutorial explores the sacral plexus, detailing its connection to the lumbar plexus via the lumbosacral trunk. It covers the superior and inferior gluteal nerves, their contributions, and the muscles they innervate. The posterior femoral cutaneous nerve is discussed as a sensory nerve. The sciatic nerve, its components, and their roles are explained, including the tibial and common peroneal nerves. The video also covers the nerves to quadratus femoris and obturator internus, the nerve to piriformis, and the pudendal nerve. Finally, it discusses the divisions of the sacral plexus.

How does the common peroneal nerve differ from the tibial nerve in terms of nerve root contributions?

What is the significance of the tibial nerve in relation to the hamstrings?

What muscles are innervated by the nerve to obturator internus?

Discuss the role of the pudendal nerve in the pelvic cavity.