Even though the ruminant and non-ruminant digestive systems are very different in some ways, they are also similar in many other ways. Both systems of course help the host digest their food. Both digestive systems also consist of some of the same organs. These organs include the mouth, esophagus, liver, pancreas, small intestine, and large intestine. These organs work the same way in both systems. Even though the ruminant digestive system has four compartments and the monogastric only has one, the ruminant has a specific organ that is like an organ in the monogastric digestive system. It's the true stomach of the ruminant digestive system and it works similarly to the stomach of monogastric animals. This organ is the abomasum. Both systems also use teeth to break down their food. The ruminant digestive system just uses a bit more time to chew..