The mouth is an opening in the face and is the first part of the alimentary canal (digestive system). It is the place where food is chewed. The mouth has teeth to help chew the food. It is an oval-shaped cavity inside the skull. The two main functions of the mouth are eating and speaking. Parts of the mouth include the lips, vestibule, mouth cavity, gums, teeth, hard and soft palate, tongue and salivary glands. The mouth is also known as the oral cavity or the buccal cavity.[1]
In addition to its main role as the start of the digestive system, in humans the mouth also plays a great part in communication. The tongue, lips, and jaw, which are parts of the mouth, are needed to produce the number of sounds in human language. People also kiss and show their feelings with the mouth.
