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What role does the buccinator muscle play in the oral cavity?

  1. It assists in chewing food

  2. It helps keep the cheeks taut and aids in mastication

  3. It enables the movement of the lower jaw

  4. It supports the tongue's movement

The correct answer is: It helps keep the cheeks taut and aids in mastication

The buccinator muscle plays a crucial role in the oral cavity primarily by helping to keep the cheeks taut and assisting in mastication, which is the process of chewing. This muscle is situated between the maxilla and mandible, and its contraction during chewing prevents food from accumulating in the vestibule, the space between the gums and the inside of the cheeks. By keeping the cheeks pulled in, the buccinator allows for a more effective grinding and mixing of food with saliva, facilitating the digestive process. Additionally, it stabilizes the cheeks during activities like speaking and eating, contributing to overall oral function.