Which term denotes the bone region that forms the central shaft of a long bone?

Which term denotes the bone region that forms the central shaft of a long bone?

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

Answer: (B)

The central shaft of a long bone is called the diaphysis. It is the long, cylindrical middle portion that runs between the proximal and distal ends (the epiphyses) and is mainly made of compact bone surrounding the medullary cavity. The ends are the epiphyses, and the region where the shaft meets the ends is the metaphysis, which in children contains the growth plate. A term like Inra isn’t used to describe a bone region.

The central shaft of a long bone is called the diaphysis. It is the long, cylindrical middle portion that runs between the proximal and distal ends (the epiphyses) and is mainly made of compact bone surrounding the medullary cavity. The ends are the epiphyses, and the region where the shaft meets the ends is the metaphysis, which in children contains the growth plate. A term like Inra isn’t used to describe a bone region.