mouth, in human anatomy, orifice through which food and air enter the body. The mouth opens to the outside at the lips and empties into the throat at the rear; its boundaries are defined by the …

Aug 10, 2023 · 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 …

Aug 20, 2025 · Mouth sores show up on the bottom lip, inner cheek, roof of the mouth, and on the gums. Review a gallery of mouth sore pictures.

The mouth consists of two regions, the vestibule and the oral cavity proper. The mouth, normally moist, is lined with a mucous membrane, and contains the teeth. The lips mark the transition …

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 …

Apr 28, 2024 · Explore the human mouth anatomy with a detailed guide. Learn teeth, tongue, gums, and more with their functions for a clear visual reference.

Jun 25, 2025 · Sores, painful gums, bad breath -- what's going on in your mouth? Find out with WebMD's slideshow of the most common mouth problems.

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) …

Sep 14, 2025 · The vestibule communicates with the mouth proper via the space behind the third molar tooth, and with the exterior through the oral fissure. The diameter of the oral fissure is …

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.