Dune

Water is vital in Dune. It is hoarded by the rich who deal in Spice (Melange), found only in Arrakis. Our intestines are Dune-like, given that they absorb and hoard most of the fluid we ingest. Absence of such absorption leads to soft stools and/or diarrhea.

Question: Can you identify an intraperitoneal area of the colon that exhibits a mesentery?