Question

Which of the following is the correct sequence of events for muscle contractions? Which of the following is the correct sequence of events for muscle contractions? muscle cell action potential, neurotransmitter release, ATP-driven power stroke, calcium ion release from SR, sliding of myofilaments neurotransmitter release, motor neuron action potential, muscle cell action potential, release of calcium ions from SR, ATP-driven power stroke neurotransmitter release, muscle cell action potential, motor neuron action potential, release of calcium ions from SR, sliding of myofilaments, ATP-driven power stroke motor neuron action potential, neurotransmitter release, muscle cell action potential, release of calcium ions from SR, ATP-driven power stroke, sliding of myofilaments

Answer 1

The correct sequence of events for muscle contractions is as follows : :  

1. motor neuron action potential.

2. neurotransmitter release.                            

3. muscle cell action potential.            

4. calcium ion release from SR.        

5. ATP-driven power stroke.      

6. sliding of myofilaments neurotransmitter release.