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.
[IB Biology SL: Digestion] The Villi: Structure vs. Function. The villi are small finger-like projections of the wall of the small intestine which extend into the lumen or interior space of the small intestine. As digestion is completed in the small intestine, the villi are then bathed in a fluid which contains the nutrient subunits the cells need. These subunits include monosaccharides, amino acids, nucleic acids, glycerol and fatty acids.