There is a thin layer of tissue that protects and repairs damage to the intestines. What is it called

This layer of either muscle or tissue lies atop the large and small intestine underneath the skin. If any damage occurs to the colon, this material latches onto the injured area and repairs it. If the stomach sustains a blow, this membrane can also detatch from its normal position and get caught around part of the small intestine. I cannot remember what it's called.

The Greater Omentum to be exact... It is the largest peritoneal fold. It consists of a double sheet of peritoneum, folded on itself so that it is made up of four layers.... it kinda looks like an apron.

It may also physically limit the spread of infections in the abdomen. The greater omentum can often be found wrapped around areas of infection and trauma, since one of its important functions is to limit the spread of infection and seal it off from surrounding areas. Some anatomy textbooks even refer to it as the "Abdominal Policeman".

Best regards

The peritoneum.