The mouth, or oral cavity, is the first part of the digestive tract. It is adapted to receive food by ingestion, break it into small particles by mastication, and mix it with saliva. The mouth consists of two regions, the vestibule and the oral cavity proper.

The lips mark the transition from mucous Ò€¦ What is the mouth? Your mouth is an oval-shaped opening that sits just below your nose. It starts at your lips and ends towards your tonsils. Your mouth is part of your digestive system and respiratory Ò€¦ The mouth is the entrance to both the digestive and the respiratory systems. The inside of the mouth is lined with mucous membranes.

Your mouth is part of your digestive system and respiratory Ò€¦ The mouth is the entrance to both the digestive and the respiratory systems. The inside of the mouth is lined with mucous membranes. When healthy, the lining of the mouth (oral mucosa) ranges in color Ò€¦ The meaning of mouth is the natural opening through which food passes into the body of an animal and which in vertebrates is typically bounded externally by the lips and internally by the pharynx and Ò€¦ The opening in the face of a person or animal, consisting of the lips and the space betweenÒ€¦. Learn more.

The opening in the face of a person or animal, consisting of the lips and the space betweenÒ€¦. Learn more.