The second guna is rajas, that is the stage when man starts the active process of self-development, transcends dumb primitiveness, grows as a warrior, and then as a leader, organizer of other people. The third guna is sattva, that is purity, harmony, bliss, happiness.
Villi also help the food to move along the digestive tract. Food takes three to six hours to move through the small intestine. The small intestine has three parts, the duodenum, jejunum and ileum.
* The villi increase the surface area of the small intestine over which food may be absorbed. *The villi are further covered by even smaller finger-like projections of the plasma membranes of the epithelial cells lining the vili which are known as microvilli.