Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025
Definition
The oral vestibule is the narrow space between the lips and cheeks on the outside, and the gums and teeth on the inside. It acts as an entryway to the oral cavity proper, facilitating the movement of food and air.
A muscular tube that connects the mouth with the esophagus and serves both respiratory and digestive functions by channeling air to lungs and food to stomach.