What is rigor mortis?

ATP synthesis ceases, but it continues to be consumed and cross bridge detachment is impossible. Actin and myosin become cross linked producing the stiffness of rigor mortis Rigor mortis is a build up of released lactic acid. Rigor mortis starts a few hours after you die, and causes your muscles to contract, or shorten, which is their natural state.

After about 12 hours Rigor mortis begins to disapate Answer the human muscles natural form is clenched so when you die they all clench and you get rigor mortis. After a few hours oxygen runs out and the muscles relax.

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