Question

Thorough mastication of food is essential because

• A. Mastication of food makes the teeth stronger.
• B. It makes the process of swallowing the food easier.
• C. By this process bigger pieces of food are broken down into smaller pieces.
• D. By this process bigger pieces of food are broken down into smaller pieces and saliva is properly mixed with it.

Answer 1

The correct option is D By this process bigger pieces of food are broken down into smaller pieces and saliva is properly mixed with it.

The action of chewing mechanically breaks down very large aggregates of food molecules into smaller particles. This results in the food having increased surface area, an important contributing factor to good digestion. Food's contact with saliva is important because it helps to lubricate the food, making it easier for foods to pass easier through the esophagus. It is also important because saliva contains enzymes that contribute to the chemical process of digestion. Carbohydrate digestion begins with salivary alpha-amylase secreted by glands positioned near the mouth.