What term describes a fixed muscle attachment point?

The term that describes a fixed muscle attachment point is "origin." In anatomy, the origin of a muscle is the point where it attaches to the bone that remains relatively stationary when the muscle contracts. This is typically contrasted with the muscle's insertion, which is the point where the muscle attaches to the bone that moves when the muscle contracts. Understanding the distinction between these terms is essential for grasping how muscles operate during movement and how they contribute to stability and function in the body. The origin serves as a stable anchor for the muscle, allowing it to exert force effectively at its insertion point during muscle contractions.