Relacionar Columnas Skeletal Muscle ContractionVersión en línea Match the various steps of a skeletal muscle contraction with the descriptions of that action. por Lindsay Spielman 1 Acetylcholinesterase 2 Tropomyosin 3 Directly causes cross bridge formation 4 Muscle relaxation 5 Toponin 6 Acetylcholine 7 Directly causes cross-bridge detachment 8 End Plate Potential 9 Calcium release by the SR Hydrolysis of ATP to ADP and Pi by the ATPase of the myosin head. Regulatory protein that covers the myosin-binding sites of the actin. Calcium is actively pumped back into the SR. Degrades acetylcholine in the synapse. Local sarcolemma depolarization of the neuromuscular junction. Calcium binds to this regulatory protein on the thin filaments. Triggered by depolarization of the t-tubules. ATP attaches to the myosin head. Neurotransmitter released by somatic neurons at the neuromuscular junction.