Chewing Oesophagus Stomach Large intestine Small intestine Teeth Saliva Gullet Swallow Mouth Acid Water Small intestine Nutrients Villi Large intestine Rectum Amylase Protease Lipase Enzyme Faeces Enzyme Saliva Amino acids Enzyme Fat Glycerol Catalyst Protein carbohydrates Fibre Amino acids Fatty acid Meat Fish Bread Pasta Roughage constipation Protease Glycerol Fats Iodine Digestion Benedict’s Buiret solution Orange Purple Energy Brown black