Answer:The small intestine is a major organ of the digestive system responsible for absorbing nutrients from food. It is a long, muscular tube that connects the stomach to the large intestine. Main functions:Nutrient Absorption: The small intestine is lined with villi, tiny finger-like projections that increase the surface area for absorption. Nutrients from digested food, such as carbohydrates, proteins, fats, vitamins, and minerals, are absorbed through the villi into the bloodstream. Digestion: Although the primary site of digestion is the stomach, the small intestine continues the process. Enzymes secreted by the small intestine and pancreas further break down food into smaller molecules that can be absorbed.Peristalsis: Like the other parts of the digestive system, the small intestine uses peristalsis, muscular contractions, to move food along its length.