Scientists have identified a new organ in the human body. It's called the mesentery (pronounced mess’-en-tair-ee). An organ is a group of tissues that has a specific function in the body. Our bodies have 79 organs, including the heart, lungs, brain, skin and stomach. The mesentery is made of fatty tissue and is shaped a bit like a fan. It is attached to the back wall of the abdomen and it helps to support the intestines and hold them in place.

Source: Scientists Identify New Organ