What term describes the area where the diaphysis meets the epiphysis?

The term that describes the area where the diaphysis meets the epiphysis is metaphysis. This region is crucial during the growth of long bones, as it contains the growth plate or epiphyseal plate, which is responsible for longitudinal bone growth in children and adolescents. The metaphysis is a transitional area that plays a significant role in bone development and remodeling.

Understanding that the metaphysis is located between the diaphysis (the central shaft of the bone) and the epiphysis (the end parts of the bone that typically articulate with other bones) highlights its importance during development. This area is involved in the process of endochondral ossification, where cartilage is replaced by bone, facilitating the increase in the length of long bones as an individual matures.