Description: The zygomatic muscle is a facial muscle that plays a key role in facial movements, especially in expressing joy and surprise. It is located in the lateral region of the face, extending from the zygomatic bone to the corners of the lips. This muscle is divided into two parts: the major zygomaticus and the minor zygomaticus. The major zygomaticus is responsible for raising the corners of the mouth, contributing to a smile, while the minor zygomaticus helps elevate the upper lip, which can express disdain or contempt. The function of the zygomatic muscle is essential for non-verbal communication, as facial expressions are fundamental for conveying emotions and establishing social connections. Its activity is controlled by the facial nerve, allowing for precise coordination in expressing feelings. The health and proper functioning of this muscle are important not only for facial aesthetics but also for social interaction and effective communication.