What are the 4 compartments of the Ruminant System and their functions?

The four compartments of the ruminant stomach are, oral to aboral, the rumen, the reticulum, the omasum and the abomasum. The rumen's function is to ferment the vegetation. The reticulum is the storage place for non-food items that were ingested (nails, wires, bolts, etc.). The omasum removes most of the water that was incorporated into the ingesta in the rumen. The abomasum is the glandular compartment that secretes acid and begins to digest the proteins in the ingesta.