Human digestive system chewing pieces of food into smaller and smaller pieces. This results in a much larger surface area for the action of digestive enzymes. The teeth are named after their particular roles in the process of mastication—incisors are used for cutting or biting off pieces of food; canines, are used for tearing, premolars and molars are used for chewing and grinding. Mastication of the food with the help of saliva and mucus results in the formation of a soft bolus which can then be swallowed to make its way down the upper gastrointestinal tract to the stomach. The digestive enzymes in
Digestive biscuit culture, the digestive is ranked the fourth most popular biscuit for "dunking" into tea, with the chocolate digestive coming in at number one. In 1839, digestives were first developed in the United Kingdom by two Scottish doctors to aid digestion. Digestives featured in advertisements for the Berkshire-based biscuit company Huntley & Palmers in 1876, with a recipe being given in Cassell's "New Universal Cookery Book" of 1894. In 1851 an issue of The Lancet London's advertising section offered "brown meal" digestive biscuits. At the time, it was asserted grain millers knew only of bran and endosperm. After 10% of the