<span>Humans shouldn't use nonrenewable sources otherwise the resources will disappear. Renewable Sources: Sun, wind, maybe water.</span>
It would be remains the same !!!!
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.
