Which term means area between the diaphysis and the physis?

Which term means area between the diaphysis and the physis?

• A. Metaphysis
• B. Diaphysis
• C. Epiphysis
• D. Perichondrium

Answer: (A)

Metaphysis is the region of a long bone between the diaphysis (the shaft) and the physis (the growth plate). It’s the growing zone where cartilage is gradually replaced by bone as lengthening occurs; endochondral ossification is active there during development. The physis sits between the metaphysis and the epiphysis, while the diaphysis is the central shaft, and the perichondrium surrounds cartilage but is not the region between these two parts. That’s why the term describing the area between the shaft and the growth plate is metaphysis.

Metaphysis is the region of a long bone between the diaphysis (the shaft) and the physis (the growth plate). It’s the growing zone where cartilage is gradually replaced by bone as lengthening occurs; endochondral ossification is active there during development. The physis sits between the metaphysis and the epiphysis, while the diaphysis is the central shaft, and the perichondrium surrounds cartilage but is not the region between these two parts. That’s why the term describing the area between the shaft and the growth plate is metaphysis.