Bone formation, also known as ossification, is the process by which new bone tissue is created. This process begins in the embryo and continues throughout life, especially during growth and healing. There are two main types of ossification: intramembranous ossification, which forms flat bones like the skull, and endochondral ossification, which forms long bones like the femur. During ossification, specialized cells called osteoblasts produce a matrix that eventually hardens into bone. As the bone matures, other cells called osteoclasts help reshape and remodel the bone, ensuring it remains strong and healthy. This dynamic process is essential for maintaining the skeletal system.