The buccinator is a thin, flat muscle located in the cheek area of the face. It plays a crucial role in facial expressions and functions, helping to keep food between the teeth while chewing. This muscle is also involved in actions like blowing and sucking, making it important for activities such as playing wind instruments. Anatomically, the buccinator is situated between the maxilla and mandible, and it is innervated by the facial nerve. It forms part of the muscles of facial expression and works in coordination with other facial muscles to facilitate movements like smiling and speaking.