The mouth is the gateway for food and drink to enter the body. It also helps to carry air in and out, and we shape the mouth to produce different sounds when we speak.
The mouth is bounded by the lips, the roof and flooe of the mouth, and the cheek muscles. It opens into the throat, a muscular tube that runs down the neck. Only air travels in the top section, which connects to the nose. Both air and food pass through the middle section, but not at the same time. The bottom section divides into two branches – the oesophagus, which carries food to the stomach, and the windpipe, which channels air to the lungs.
The mouth 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.
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