The more fixed attachment of a muscle to the bone is referred to as what?

The term referring to the more fixed attachment of a muscle to the bone is known as the origin. In anatomical terminology, the origin of a muscle is the point where it attaches to the stationary bone, typically closer to the center of the body. This is in contrast to the insertion, which is the point of attachment that moves when the muscle contracts. Understanding the distinction between these terms is essential for grasping how muscles function during movement.

Ligaments and tendons, while related to the musculoskeletal system, serve different purposes. Ligaments connect bones to other bones at a joint, providing stability, whereas tendons connect muscles to bones, allowing for movement. Therefore, the concept of origin specifically pertains to the muscle's attachment and its role in physical movement, making it the correct choice in this context.