Rigor Mortis Without ATP, the sarcomere cannot relax Lasts 72+ hours until muscle fibers decompose (AChE) Acetylcholinesterase – breaks down Ach in synapse Stops impulse to sarcolemma Ca2+ pump 9which needs ATP) moves back to equilibrium Cross-bridges are broken
The next Powerpoint will explain: Where does the ATP come from? What happens when we run out of ATP? Why do I get a cramp in my side when I work out? How are trained athletes’ muscles more efficient?