Muscle contraction questions?

It sounds like you are requiring the answers for school. I don't know if you are pre-med or what but these are answers that you really need to know yourself, not just someplace convenient to get the answers. I would hate to end up in the hospital and have you attending. I would rather have an "I don"t know, but I will find someone who does and have them talk with you" than having you go to "Answers" to get some opinion.pp