Which zone is Calcification Zone?

Which zone is Calcification Zone?

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

Answer: (D)

In the growth plate during endochondral ossification, the Calcification Zone is where the cartilage matrix begins to mineralize. After chondrocytes hypertrophy and the surrounding matrix thickens, mineral deposits form in this region. The chondrocytes in this zone often die, leaving behind calcified cartilage that is then invaded by blood vessels and osteoprogenitor cells to replace it with bone. This stage sets up the transition from cartilage to bone and precedes the actual ossification of bone tissue. So, the defining feature here is cartilage that has become calcified, which is why this zone is identified as the Calcification Zone.

In the growth plate during endochondral ossification, the Calcification Zone is where the cartilage matrix begins to mineralize. After chondrocytes hypertrophy and the surrounding matrix thickens, mineral deposits form in this region. The chondrocytes in this zone often die, leaving behind calcified cartilage that is then invaded by blood vessels and osteoprogenitor cells to replace it with bone. This stage sets up the transition from cartilage to bone and precedes the actual ossification of bone tissue. So, the defining feature here is cartilage that has become calcified, which is why this zone is identified as the Calcification Zone.