What is the primary function of the large intestine?

The primary function of the large intestine is to form feces. This is achieved through the absorption of water and electrolytes from the indigestible food matter that passes through it. As the materials move through the large intestine, they are dehydrated, leading to the compact formation of waste products. The large intestine also plays a role in storing these waste products until they are expelled from the body. While some nutrient absorption occurs in the large intestine, it is significantly less than in the small intestine, which is the main site for nutrient absorption. The large intestine does not primarily engage in digestion, nor is it responsible for secreting digestive enzymes, as these processes are mainly handled by other parts of the gastrointestinal tract. Thus, the role of forming feces is central to the large intestine's function.