<P> At the time of death , a condition called `` primary flaccidity '' occurs . Following this , the muscles stiffen in rigor mortis . All muscles in the body are affected . Starting between two and six hours following death , rigor mortis begins with the eyelids , neck , and jaw . The sequence may be due to different lactic acid levels among different muscles , which is directly related to the difference in glycogen levels and different types of muscle fibers . </P>
<P> At the time of death , a condition called `` primary flaccidity '' occurs . Following this , the muscles stiffen in rigor mortis . All muscles in the body are affected . Starting between two and six hours following death , rigor mortis begins with the eyelids , neck , and jaw . The sequence may be due to different lactic acid levels among different muscles , which is directly related to the difference in glycogen levels and different types of muscle fibers . </P>
how long does it take for rigor mortis to set in in animals
how long does it take for rigor mortis to set in in animals
Starting between two and six hours following death
Starting between two and six hours following death