Dr Adel Bondok Anatomy Teaching Videos. The video describes the anatomy of the rectum: length, position, extent, flexures, peritoneal covering, relation, blood supply, nerve supply and lymph drainage.
It also describes the routes of the spread of the rectal cancer.
Nerve Supply of the Rectum:
The nerve plexus is present on the surface of the rectum surrounded by pelvic fascia. The autonomic nerves that supply the plexus reach the rectum by passing over its surface:
1. Sympathetic nervous supply is from the lumbar splanchnic nerves and superior and inferior hypogastric plexuses.
2. Parasympathetic supply is from S2-4 via the pelvic splanchnic nerves and inferior hypogastric plexuses.

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