Human Functions Test 1 Practice

Interosseous membranes are fibrous sheets that bind two adjacent long bones along their shafts, creating a strong, slip-free link that helps transmit load and stabilize the forearm during rotation. In the forearm, this membrane runs between the radius and ulna, holding the two bones together along most of their length and providing a surface for muscle attachments. This connection is what helps transfer forces from the hand to the forearm and maintains the proper spacing of the bones during pronation and supination, as well as during activities that load the wrist and forearm. A similar interosseous membrane exists between the tibia and fibula in the leg, but the classic example tested in this context is the linkage between the radius and ulna. Therefore, the best answer is the connection between the radius and ulna.