Put the following steps for a muscle contraction in the corr…
Put the following steps for a muscle contraction in the correct sequence. (1) depolarization arrives at the sarcoplasmic reticulum and calcium is released. (2) actin myofilaments are pulled closer together over myosin myofilaments. (3) calcium floods the sarcoplasm and binds to troponin. (4) depolarization arrives at the synaptic end bulb and causes release of the neurotransmitter. (5) tropomyosin moves to expose active sites allowing actin and myosin to form linkages.
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