What is the purpose of the large intestine?

The large intestine plays a crucial role in the digestive system by absorbing water and electrolytes from indigestible food matter. As food moves through the colon, water is reabsorbed, transforming the remaining material into stool. The large intestine also houses a large number of beneficial bacteria that help break down certain substances, produce vitamins, and contribute to immune function. Its final function is to store and expel waste, maintaining fluid balance and preventing dehydration.