What are the characteristics of a cow's digestive organs? A detailed explanation

Cattle are herbivores, and their stomach has a very large capacity, divided into four compartments. The walls of the first three stomachs (the rumen, reticulum, and omasum) have no digestive glands, while the fourth stomach (the abomasum) can secrete gastric juice and is also called the true stomach. The rumen is the largest; although it cannot secrete digestive juice, it can contract and relax powerfully, performing rhythmic peristalsis to churn the food. The rumen mucosa has many papillary projections, called "mucosal papillae," which are especially well developed and help grind the food. The rumen also contains large numbers of various microorganisms and ciliates, and the life metabolic activities of these various microorganisms and ciliates play an extremely important role in breaking down food and synthesizing nutrients.