This lecture is part of Anatomy and Physiology I (BIO 2331), a 14-week course at Cuyahoga Community College (Tri-C). It explores the anatomy, composition, and development of bone tissue — including compact and spongy bone, osteons, osteocytes, and ossification processes. The lecture also covers bone growth and remodeling, calcium regulation by hormones, fracture repair, and bone pathologies such as osteoporosis, osteomalacia, rickets, and Paget’s disease.