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 Calcium release by the SR 2 Directly causes cross bridge formation 3 Tropomyosin 4 Muscle relaxation 5 Toponin 6 Acetylcholinesterase 7 End Plate Potential 8 Directly causes cross-bridge detachment 9 Acetylcholine Calcium is actively pumped back into the SR. Regulatory protein that covers the myosin-binding sites of the actin. Triggered by depolarization of the t-tubules. Degrades acetylcholine in the synapse. ATP attaches to the myosin head. Hydrolysis of ATP to ADP and Pi by the ATPase of the myosin head. Neurotransmitter released by somatic neurons at the neuromuscular junction. Calcium binds to this regulatory protein on the thin filaments. Local sarcolemma depolarization of the neuromuscular junction.
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