Rumen
The rumen is the largest compartment of the stomach in ruminant animals, such as cows, sheep, and goats. It plays a crucial role in the digestion of fibrous plant materials. The rumen contains billions of microorganisms that help break down cellulose, allowing the animal to extract nutrients from tough plant matter.
In addition to digestion, the rumen serves as a fermentation chamber where food is mixed and fermented. This process produces volatile fatty acids, which are a primary energy source for ruminants. The rumen's unique structure and function enable these animals to thrive on a herbivorous diet.