[问答题]
1.Distinguish between a ml5v/ .wf1+ x-q vydv;c h.r5wfauak8byofibr*ww/kdyghq72 5bf zd:il, the sarcoplasmic reticulum and the sarcolemmahbd*fg 2d7wyw /:z kq5.
2.Outline the different proteins and their position in the sarcomere when the muscle is relaxed.