CBSE Class 10 Answered
Chewing in mouth breaks food to smaller pieces → Salivary amylase 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 → Pancreatic amylase digests starch to maltose → Trypsin and chymotrypsin digest proteins to peptides → Peptidases complete the digestion of peptides to amino acids → Maltase completes 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.
SOURCE ENZYME/ PRODUCT FOOD PRODUCT MOUTH (salivary glands) Salivary amylase Polysaccharides Maltose STOMACH Pepsin HCl and mucus Proteins Peptides PANCREAS Pancreatic amylase Trypsin Lipase Polysaccharides Proteins Fats Maltose Peptides Fatty acids LIVER SMALL INTESTINE Bile Maltase Peptidases Lipids Maltose Peptides Emulsified fats Glucose Amino acids
and glycerol