After the power stroke, ADP is released<span>; however, the cross-bridge formed is still in place, and actin and myosin are bound together. </span>ATP can<span> then attach to myosin, which allows the cross-bridge cycle to start again and further </span>muscle contraction can occur<span> </span>
The difference is that emphysema and chronic bronchitis are different types of chronic obstructive pulmonary disease (COPD). <span />
Chemical energy, hope this helps. Correct me if im wrong but im sure its chemical energy