Final answer:
The buccinator muscle, located in the anterior portion of the cheek, is involved in facial expression through actions such as compressing the cheek, whistling, blowing, sucking, and chewing.
Step-by-step explanation:
The muscle located in the anterior portion of the cheek that is involved in facial expression is the Buccinator muscle. This muscle plays a role in compressing the cheek and is responsible for actions such as whistling, blowing, sucking, and chewing.
Facial muscles contribute to various expressions by moving the skin, rather than bones. Other muscles involved in facial expression include the corrugator supercilii, which is the prime mover of the eyebrows.
Overall, the buccinator muscle is a key component of facial expression and plays an important role in various actions and movements of the cheek and mouth.