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• The food is taken into the mouth by the process of ingestion
• chewing is also called Mastication.
• Teeth are hard calcified structures found inside the gums which help in cutting and grinding of food.
• Mouth is also known as buccal cavity or oral cavity.
• chewing is a type of digestion that involves the mechanical breakdown of food into smaller pieces or a type of digestion known as mechanical digestion the liquid produced is called saliva
• Cutting


  The process of dividing something into smaller pieces using a sharp tool or edge. In the context of teeth, the incisors and canines are primarily responsible for cutting food.
• Tearing


  The process of pulling or ripping something apart using force. In the context of teeth, the canines are responsible for tearing food.
• saliva contain the enzyme amylase which breaks down starch into glucose
• the saliva is produced by the salivary glands and contains amylase, which breaks down starch into glucose
• while in the stomach the food is churned around and mixed with the gastoric juices
• the tongue mix the food with saliva and shape it into a small ball called bolus