경골, or "gyeonggol," refers to the bones that form the skeletal structure of vertebrates, including humans. These bones provide support, protect vital organs, and enable movement through the attachment of muscles. The human skeleton consists of 206 bones, which can be categorized into two main groups: the axial skeleton and the appendicular skeleton. In traditional Korean medicine, 경골 is also associated with the concept of "meridians," which are believed to be pathways for the flow of energy in the body. Understanding the structure and function of 경골 is essential for various fields, including anatomy, medicine, and physical therapy, as it plays a crucial role in overall health and mobility.