Does anyone know a lot about Rigor Mortis?
Ok rigor mortis is actually very little to do with oxygen. For muscles to tense you need energy (ATP molecules are energy molecules) and you need calcium. The calcium means that muscle contraction is possible so the muscles go ahead and contract. The energy molecules mean that the muscle can stop contracting (the energy doesnt actually make the muscles contract). When the body dies,theres no energy so if the muscles and tensed up, or contracted, they cant stop, because theres no energy. Therefore,the muscles remain tensed.