The primary function of the structures identified as villi is absorbing nutrients into the bloodstream. Villi are small, finger-like projections in the small intestine that greatly increase the surface area for absorption. They contain blood capillaries and lacteals (lymphatic vessels) that help in the absorption of nutrients such as sugars, amino acids, fatty acids, vitamins, and minerals from the digested food. These nutrients are then transported through the bloodstream to cells in the body where they are utilized for various functions like energy production, growth, and repair. Therefore, the main role of villi is to enhance the absorption of nutrients into the bloodstream, supporting overall bodily functions.
