The relaxation of skeletal muscle fibers and the skeletal muscle, itself, begins with the motor neuron, which stops releasing its chemical signal, ACh, into the synapse at the neuromuscular junction. The muscle fiber will repolarize. What is the next step in relaxation? A) The actin-binding sites on the thin filaments are reshielded. B) ATP-driven pumps move Ca++ out of the sarcoplasmic reticulum. C) Troponin and tropomyosin revert back to their original positions on the actin fibers. D) The gates in the sarcoplasmic reticulum where Ca++ was being released are closed.

prophase is the first step in mitosis and will show one huge circle (nucleus) and centrioles - nothing is being done to it. metaphase is the third step and where the chromatids meet in the middle and the centrioles are at opposite ends. anaphase is the fourth step and where the chromatids start to split/separate. telophase is the second to last step where the chromatids start to split along with the centrioles, it looks like there is getting ready to be two different cells. if you follow this, then it should you to answer what it looks like. have a great day and i hope i you! if i did not answer your question or you are confused, let me know and i will you as much as i can.