Which zone is named for growth through cell division?

Which zone is named for growth through cell division?

• A. Proliferation Zone
• B. Calcification Zone
• C. Ossification Zone
• D. Hypertrophic Zone

Answer: (A)

Growth through cell division happens in the proliferative zone of the growth plate. In this region, chondrocytes actively divide by mitosis, forming organized columns that increase the number of cells and push the bone ends apart to lengthen the bone. The other zones have different roles: the hypertrophic zone features enlarging chondrocytes, the calcification zone involves mineralization of the cartilage, and the ossification zone replaces cartilage with bone.

Growth through cell division happens in the proliferative zone of the growth plate. In this region, chondrocytes actively divide by mitosis, forming organized columns that increase the number of cells and push the bone ends apart to lengthen the bone. The other zones have different roles: the hypertrophic zone features enlarging chondrocytes, the calcification zone involves mineralization of the cartilage, and the ossification zone replaces cartilage with bone.