A muscle attaches to a bone at two points the origin and insertion. The origin is the immovable (stationary) point. The insertion is the movable point. The insertion always moves towards the origin.
Fibrous joint? The definition: consists of two bones that are united by fibrous tissue and exhibit little or no movement.
Origin
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Yes, the most stationary end of the muscle is called the origin. It is typically located closer to the midline of the body and remains relatively fixed during muscular contractions.
A muscle becomes shorter when it contracts.
Alright, now that the riff-raff is outta the way - Origin is the attachment of a muscle (tendon) that is stationary. Insertion is at the other end of the muscle that is attached to a movable bone, also with a tendon. Hoped that helps.
Insertion point, which most probably is a tendon.
When a muscle contracts, it shortens in length.
A muscle that contracts shortens whereas a muscle that relaxes lengthens.
Ligaments attach bone to bone. Tendons attach muscles to bone.No, the origin is the attachment of a muscle to a stationary bone. You may have commonly heard of this as a "fixed end".
The end of the muscle that is attached to the stationary bone is the point of origin. The muscle end that is attached to the moving bone is the point of insertion, and the action is what the muscle actually does.
When a muscle contracts, it pulls with a force generated by the muscle fibers contracting and shortening.