Explain the process of Excitation-Contraction Coupling

Please explain the process of Excitation-Contraction Coupling. Make sure to discuss all channels and structures involved, including ATP, any ions, actin, myosin, any regulatory proteins, organelles, motor neurons, sarcolemma, etc. In other words, explain it using all of the details discussed in the PowerPoint Lecture Video. Type the assignment directly into the provided textbox. No outlines, lists, or bullet points.