What is zygomaticus major also known as?

Zygomaticus major is often referred to as the "laughing muscle" because of its role in facial expressions that contribute to laughter and smiling. This muscle originates from the zygomatic bone and inserts into the corner of the mouth. When it contracts, it pulls the corners of the mouth upward, creating a smile or laugh.

This term aptly reflects its function in facilitating expressions of happiness and joy, which are often associated with laughter. Understanding this muscle's contribution to facial expressions is essential in the study of anatomy, particularly in how muscles influence emotional expressions and non-verbal communication.