Which part of the digestive system is responsible for water absorption and waste formation?

The large intestine plays a crucial role in the digestive system, primarily focusing on the absorption of water and the formation of waste. As the undigested food material passes through the colon, the large intestine effectively reabsorbs most of the water present, which helps to concentrate the waste material into a more solid form. This process is essential for maintaining the body's fluid balance and ensuring that the stools are appropriately formed for elimination.

After the small intestine completes nutrient absorption, whatever remains—largely water, fiber, and other waste materials—enters the large intestine. The bacteria present in the large intestine also contribute to the further breakdown of waste, leading to the formation of feces that are ultimately expelled from the body. Thus, the large intestine fulfills its vital function in the digestive system by ensuring optimal hydration and waste management.