Myotendinous junction (MTJ) is the tendon-muscle union. It is the _________ of collagen fibers and muscle cells. The fibers _______ and _______ to form a stronger connection. However, it is still the first place that will get weaker. Muscle rupture can occur in the _______ _______ _______ or insertion of tendon on _______. There are direct connections between muscle cell membrane and fibroblasts, PGs, and collagen. The muscle _______ into _______. Decreased loading results in _______ at the MTJ.