The term 'bone structure' refers to the skeletal system, which is composed of bones and their associated connective tissues. The SKELETON is the framework of the body, providing support and protection for the organs and muscles. It also serves as a storage site for minerals and fat. The FORM of the SKELETON is determined by its ANATOMY, which includes the size, shape, and arrangement of the bones. Together, the SKELETON, FORM, and ANATOMY of the bones make up the bone structure.