Myoblast fusion is a biological process where individual muscle precursor cells, known as myoblasts, combine to form larger, multinucleated muscle fibers. This process is essential for muscle development and repair, allowing the formation of functional skeletal muscle tissue. Myoblasts are derived from mesodermal stem cells during embryonic development and play a crucial role in muscle growth. During myoblast fusion, specific proteins and signaling pathways are activated to facilitate the merging of cell membranes. This process is regulated by various factors, including myogenic regulatory factors and cell adhesion molecules. Proper myoblast fusion is vital for maintaining muscle mass and function throughout an organism's life.