Muscle Origin and Insertion: Understanding Their Fixed Roles

No, the origin and insertion of a muscle cannot be interchanged. Each muscle has a fixed point of origin, usually the more immobile attachment, and a movable point of insertion, which can be either closer to the trunk (proximal insertion) or farther away (distal insertion).

The belly or body of the muscle contracts, pulling the movable attachment closer to the immovable attachment. To reverse this action, you would need to create a new muscle in the opposite direction.