Epiphyseal line-The cross-section images of epiphyseal plate. Between the metaphysis and epiphysis of long bones have a discoid cartilage, called epiphyseal plate. In the growth, although the epiphyseal plate is in a gradual ossification, but changes itself and less (thin), so as to ensure our long bone growth, when puberty began to develop over time, with the sex hormone secretion, can be understood as the epiphysis and then After the gradual ossification of the ability not to continue to grow, all ossification finished, no longer space to grow and materials of growth.