The insertion of a muscle

Question

Quizplus · Accepted Answer

The insertion of a muscle is the movable end of attachment, which is where the muscle attaches to the bone that is moved when the muscle contracts. This is different from the origin of the muscle, which is the fixed end of attachment. The insertion and origin work together to create movement. The other options are incorrect: A is incorrect because insertion is not only associated with smooth muscle, it is also associated with skeletal muscle; B is incorrect because not all insertions contain muscle spindles; D is incorrect because while the insertion may contribute to fetal development, it is not the source of development for the muscle; and E is incorrect because the insertion and origin serve different functions in muscle movement.

The Insertion of a Muscle