Where does the interosseous membrane of the arm run?

The correct answer indicates that the interosseous membrane of the arm runs from the radius to the ulna. This fibrous sheet of connective tissue plays an important role in the forearm, as it connects these two bones and provides stability and support while allowing for the necessary range of motion during various movements, particularly during pronation and supination of the forearm.

The interosseous membrane helps distribute forces between the radius and ulna, which is crucial for transferring loads through the forearm during activities like lifting and manipulating objects. Additionally, it serves as an attachment site for muscles that aid in forearm movements, contributing to the overall functionality of the upper limb.

Understanding the anatomy and function of the interosseous membrane is essential for comprehending how the forearm operates as a unit and how it interacts with the rest of the arm.