Which of the following is the correct sequence of events for muscle contractions? a) motor neuron action potential, meurotransmitter release, muscle cell action potential, release of calcium ions from sr, atp-driven power stroke, sliding of myofilamentsb) neurotransmitter release, muscle cell action potential, motor reuron action potential, release of calcium ions from sr, sliding of myofilaments, atp-driven power strokec) muslce cell action potential, neurotransmitter release, atp-driven power stroke, calcium ion release from sr, sliding of myofilamentsd) neurotransmitter rlease, motor neuron cation potential, muscle cell action potential, release of calcium ions from sr, atp-driven power stroke