I have a case study that I need to do and I need someone to help simplify it for me. I would greatly appreciate it and thanks in advance!

Beginning with depolarization at the neuromuscular junction, describe the normal sequence of events which lead to muscle contraction and relaxation. Use numbered steps beginning with (1) the muscle being depolarized at neuromuscular junction:

I started next with

(2) Ca+ being released to the entrance of ttubules and sr
(3) Ca+ and tropin bind with each other moving topomyosin

Could someone please tell me if I'm on the right track? I've been flipping pages for hours...