The function of the large intestine in the digestive system is to absorb water and electrolytes from indigestible food matter, and then to facilitate the elimination of waste products. As food passes through the large intestine, it becomes more solid as water is absorbed. This organ also plays a role in the fermentation of undigested material by gut bacteria, producing vitamins and short-chain fatty acids beneficial for health. The large intestine comprises several sections, including the cecum, colon, rectum, and anal canal, coordinating to form and excrete feces from the body.