What Is a Mesentery in a Fetal Pig?

The mesentery in a fetal pig is a transparent, thin sheet of tissue that is connected to the peritoneum. It supports the internal organs. Located near the mesentery are veins and arteries that transport blood to and from the small intestine.

When seen in a dissected image, the mesentery is dark purple in appearance due to the proximity of the veins and arteries. There are mesenteries for the small intestines, the mesosigmoid and the transverse mesocolon. The mesosigmoid enfolds the sigmoid portion of the colon. The transverse mesocolon connects the transverse portion of the colon to the abdomen's back wall.