Your beloved hamster Fred has died Rest in peace Rigor

Last updated: 2/25/2023

Your beloved hamster Fred has died Rest in peace Rigor mortis has set in and the muscles are in a state of contraction You know from biology class that the energy from a phosphate from ATP attaches to myosin and results in the contracted state of the muscle Why does the muscle stay contracted after death The ADP molecule binds to myosin and keeps the muscle contracted after death The nerve controlling muscle contraction can be stimulated after death The phosphate falls off of the myosin protein and the muscle stays contracted As long as the phosphate is attached the muscle will stay contracted because the phosphate has activated the myosin protein and it is performing work