This latter is seen about the region of the pancreas and in the folds of the mesentery.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
In very young animals, and sometimes in newborn calves, this aperture in the abdominal muscles remains open and a part of the bowel or a portion of the mesentery may slip through the opening, constituting what is called umbilical hernia.
"Special Report on Diseases of Cattle"
U.S. Department of Agriculture J.R. Mohler
Some of Galen's contemporaries asserted that upon exposing the mesentery of a sucking animal several small vessels were seen filled first with air, and afterwards with milk.
"Fathers of Biology"
Charles McRae