Final answer:
Mastication is the process of chewing food using the teeth in the oral cavity.
Step-by-step explanation:
Mastication is the process whereby material is chewed by the teeth in the oral cavity. The oral cavity, or mouth, is the point of entry of food into the digestive system. All mammals have teeth and can chew their food to begin the process of physically breaking it down into smaller particles. The chewing action of the teeth is known as mastication.