What does the large intestine primarily do?

The large intestine primarily functions to absorb water and form feces. This process is crucial for maintaining the body's hydration levels and optimizing nutrient absorption. As food moves through the digestive tract, it reaches the large intestine after passing through the small intestine, where most nutrient absorption occurs. The remaining waste, along with undigested materials, enters the large intestine, where water is reabsorbed into the body. This concentration of waste leads to the formation of feces, which is then stored in the rectum until it is ready to be expelled.

While bile is stored in the gallbladder and is important for the digestion of fats, it is not a primary function of the large intestine. The large intestine does not play a significant role in digesting proteins or producing digestive enzymes, tasks that are primarily managed by other parts of the digestive system, especially the stomach and pancreas.