This video explains the digestive system, digestion of carbohydrates, proteins and fats. This video also explains the physiology of small intestine and absorption of food. Timeline 0:16 Digestive system 0:32 digestion 1:01 Carbohydrates 1:04 Protiens 1:08 Fats 1:14 Blood stream 1:25 Small intestine 1:38 Villus 3:12 Absorption