Chewing in mouth breaks food to smaller pieces → Salivaryamylase breaks starch down to maltose → Food bolus is swallowed → Passage of food from mouth to pharynx to oesophagus and then to stomach → Stomach muscles mix food with gastric juice, producing chyme → In stomach, pepsinogen is converted to pepsin, which digests proteins to peptides → Pancreatic juice released into small intestine → Sodium bicarbonate, present in pancreatic juice, neutralizes the acidic material from the stomach → Pancreaticamylase digests starch to maltose → Trypsin andchymotrypsindigest proteins to peptides → Peptidases complete the digestion of peptides to amino acids → Maltasecompletes the digestion of maltose into glucose → Bile, from liver, emulsifies fats → Lipase digests fats to glycerol and fatty acids → Absorption of digested food by villi of small intestine → Absorption of water, sodium and other useful substances by large intestine → Elimination of undigested food from the body.