Between the diaphysis and epiphysis lies which region near the area of active bone growth?

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Multiple Choice

Between the diaphysis and epiphysis lies which region near the area of active bone growth?

Explanation:
Growth in length occurs at the region where the growth plate sits, which lies between the epiphysis and the diaphysis. This area, the metaphysis, is where cartilage is actively replaced by bone during development, driving the elongation of the bone. The diaphysis is the shaft, the epiphysis is the end part near a joint, and the periosteum is the outer fibrous covering—none of these are the active growth zone. Therefore, the correct region is the metaphysis.

Growth in length occurs at the region where the growth plate sits, which lies between the epiphysis and the diaphysis. This area, the metaphysis, is where cartilage is actively replaced by bone during development, driving the elongation of the bone. The diaphysis is the shaft, the epiphysis is the end part near a joint, and the periosteum is the outer fibrous covering—none of these are the active growth zone. Therefore, the correct region is the metaphysis.

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