The interosseous membrane is best described as which type of joint?

• A. Suture
• B. Interosseous membrane
• C. Epiphyseal plate
• D. Intervertebral disc

Answer: (B)

The question is testing how bones are joined by connective tissue and how that shapes joint type. The interosseous membrane between parallel long bones is a sheet of dense regular connective tissue that binds the bones together while allowing only limited movement. That arrangement is a fibrous joint called a syndesmosis. Because the interosseous membrane itself is the connecting tissue that forms this fibrous linkage, it best describes the joint type here.

Other options refer to different joint categories: sutures are immobile fibrous joints between skull bones; the epiphyseal plate is a cartilaginous growth plate between the ends and shafts of growing bones; and an intervertebral disc is a fibrocartilaginous joint between vertebral bodies. These do not describe the interosseous linkage between long bones, which is why the interosseous membrane is the correct descriptor.