the central canal of an osteon contains what
Osteon Each osteon consists of concentric layers, or lamellae, of compact bone tissue that surround a central canal, the haversian canal. The haversian canal contains the bone's blood supplies. The boundary of an osteon is the cement line.
Ossification center A secondary ossification center is the area of ossification that appears after the primary ossification center has already appeared â€“ most of which appear during the postnatal and adolescent years. Most bones have more than one secondary ossification center. In long bones, the secondary centres appear in the epiphyses.