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Bones of the skeletal system can be classified into four major types. They are categorized by shape and size. The four main bone classifications are long, short, flat and irregular bones. Long bones are bones that have greater length than width. Examples include arm, leg, finger, and thigh bones.
Bones and Skeletal System. 1  Human skeleton. 2  Axial and appendicular skeleton. 3  Structure and functions of bones. 4  Types of bones. 5  Bone markings and features on bones. 6  Disorders of the skeletal system. 7  Curvature of the spine. 8  Types of joints.