The Skeletal System Vocabulary Articulation: Cancellous (Spongy) Bone: Compact Bone: Diaphysis: Ossification: Epiphyseal Plate: Epiphysis: Haversian System: Ligament: Medullary Cavity: Osteoblasts: Osteoclasts: Osteocytes: Osteoporosis: Periosteum: Tendon