The primary function of the large intestine is to absorb water and electrolytes from indigestible food matter and consolidate waste into feces. After the small intestine completes digestion and nutrient absorption, any remaining material passes into the large intestine, where beneficial bacteria further break down some substances. This absorption process is crucial for maintaining proper hydration and electrolyte balance in the body. The large intestine also plays a role in the storage and eventual expulsion of waste, thus contributing to overall digestive health.