vestibule
Quick Summary
The vestibule of the mouth is the area between the cheeks and the teeth. It is one of the two sections that divide the mouth, the other being the oral cavity proper. The entire mouth, including the vestibule, is lined with mucous membranes that help keep it moist and clean. These membranes, along with salivary glands, produce fluid that bathes the mouth, aiding in the initial stages of digestion and the formation of speech sounds. The vestibule is a key part of the oral anatomy, contributing to the overall function of the mouth in eating and speaking.1
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