<unk>  villi (singular:<unk>  are tiny, finger-like structures that protrude from the wall of the intestine and have additional extensions called microvilli  (singular: microvillus) which protrude from epithelial cells lining villi.  They increase the absorptive area of the<unk>  wall. It is important that the food is absorbed at a considerably fast rate so as to allow more food to be absorbed.(If the process is too slow, the concentration of the blood in the blood vessels and the food will be equal, thus, diffusion will not occur.)Digested nutrients (including sugars and amino acids) pass into the villi through diffusion. Circulating blood then carries these nutrients away.
Intestinal villus
Mesenteric glands
Buccal mucosa
Morison's pouch
Rathke's pouch
Gut-associated lymphoid tissue
Villus
Nodule 