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