Which organ functions primarily in the absorption of water?

The large intestine primarily functions in the absorption of water. As food moves through the digestive system, it is broken down and nutrients are absorbed mainly in the small intestine. However, by the time the remaining waste reaches the large intestine, most of the nutrients and almost all of the energy from the food have already been extracted. The main role of the large intestine is to absorb water and electrolytes from this undigested material, which helps to consolidate waste into a more solid form for excretion.

The large intestine's ability to absorb water is crucial for maintaining fluid balance in the body. If it were to malfunction, it could lead to dehydration or other digestive issues. Understanding this function highlights the importance of the large intestine in the overall digestive process and homeostasis.