mesoduodenum mes·o·du·o·de·num (měz'ə-dōō'ə-dē'nəm, -dyōō'-, -dōō-ŏd'n-əm, -dyōō-, měs'-)
The part of the mesentery that connects the duodenum to the wall of the embryonic abdominal cavity.
The duodenum and mesoduodenum are free and can be turned toward the median line.
The portion adjacent to duodenum (head and neck of the gland) is developed between the layers of the mesoduodenum.
The continuity of the mesoduodenum with the jejuno-ileal mesentery is well shown.
Cephalad of the hepatic artery is the developing omentum, caudad of the vessel the mesoduodenum.
These structures can be lifted up and turned toward the median line with the free duodenum and mesoduodenum.