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.

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looks like the answer is     c     to me!

measuring physical properties lab reportinstructions: in the physical properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in tiny world. record your observations and test measurements in the lab report below. youwill submit your completed report.name and title: lyric lawton, mr.herbert, 10/13/17, physical properties lab. objective(s): i need to parvus build his house out of the right material, so he will stay cool in the mountains.hypothesis: if we use wood to build the roof of the house, then the temperature inside the house will remain cooler.if we use clay brick to build the walls and floors of the house, then the temperature inside the house will remain cooler.if we use aluminium to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate.if we use iron to construct the latches on the windows and doors, then the magnetism will keep the latches secure.