Definition
"Second stomach" is a simplified way to refer to the reticulum, the second compartment in the ruminant stomach. The reticulum's primary function is to trap foreign objects and sort food particles. It has a unique honeycomb structure that helps it perform these tasks efficiently. Small food particles are passed on, while larger particles are sent back to the rumen for more chewing. Thinking of the reticulum as the 'second stomach' emphasizes its role after the initial fermentation in the rumen.