Neurons produce an action potential at the same time or none at all
ATP<span> is responsible for cocking (pulling back) the myosin head, ready for another cycle. When it binds to the myosin head, it causes the cross bridge between actin and myosin to detach. </span>ATP<span> then provides the energy to pull the myosin back.</span>
The reproductive system is a group of sex organs that work together for the purpose of sexual reproduction. Hope this helped!