Serratus Anterior is a muscle located on the side of the rib cage that helps to stabilize the scapula or shoulder blade. There are several synonyms for this muscle, including the "saw-toothed muscle," "anterior serratus," "anterior serratus muscle," and "chest wall muscle." The muscle derives its name from its distinctive sawtooth shape, which is characterized by a series of interlocking, triangular-shaped protrusions. The serratus anterior muscle is essential for many activities, such as reaching, lifting, and pulling movements. It is also important for maintaining proper posture and stability in the upper body. Understanding the different synonyms for the serratus anterior muscle can help individuals in the medical field communicate more effectively and efficiently.