Population density shows how cramped or spread out inhabitants are. Cities with high population densities can be considered overpopulated, but the extent to which this is the case depends on factors like quality of housing and infrastructure and access to resources. Source: Wikipedia, 2017.
Livor mortis on the posterior aspects of the body is caused by settling of the blood because of gravity when the body is in a supine position. As the postmortem interval lengthens, Tardieu spots develop in areas of lividity, such as this individual's shoulder area, as decomposing capillaries rupture.
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 to 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.