Which muscle action is produced by the buccinator?

The buccinator muscle is primarily responsible for blowing and compressing the cheeks. This is crucial for activities like sucking, blowing air, and keeping food between the teeth during chewing. The muscle helps in controlling the movement of the oral cavity, ensuring that the cheeks are taut and can aid in conveying sound and assisting with speech.

This muscle's function is particularly evident when you see someone blowing up a balloon or playing a wind instrument; the buccinator keeps the cheeks firm and helps to create pressure in the oral cavity. This action distinguishes the buccinator from other facial muscles that focus on different movements such as raising the eyebrows or winking, which are governed by other specific muscles in the face.