Livor Mortis is a Latin term that refers to the bluish-purple discoloration of dead bodies due to blood pooling. The pronunciation of Livor Mortis is /ˈlaɪvər ˈmɔːrtɪs/. The spelling of this word is derived from the Latin language, with "Livor" meaning "bluishness" and "Mortis" meaning "of death". The IPA phonetic transcription clearly shows that "Livor" is pronounced with a long "i" sound and "Mortis" with a short "o" sound. This term is commonly used in forensics to determine the time of death in a deceased individual.
Livor mortis is a term used in forensic science and pathology to describe the settling of blood in the lower portions of the body after death. Also known as lividity or postmortem lividity, it is one of the four stages of the process of autolysis that occurs in a deceased individual.
Shortly after death, as the heart stops pumping and circulation ceases, blood begins to settle due to gravity. Livor mortis typically becomes apparent within one to two hours after death and fully develops within six to twelve hours. It is characterized by a purple or reddish coloration in the areas of the body that are in direct contact with a surface, such as the back and buttocks when a person lies on their back.
The discoloration occurs because red blood cells break down, releasing hemoglobin into the surrounding tissues. This blood pooling phenomenon is more noticeable in areas where the skin is thin or tightly pressed against a surface. In the absence of pressure, the blood can shift, resulting in a mottled or patchy appearance.
Livor mortis provides valuable information in determining the position of the body after death. Analyzing the lividity patterns and distribution can help forensic experts ascertain if a body has been moved or if a death scene has been altered. The color, location, and distribution of livor mortis can also suggest the time of death, although this estimation can be affected by external factors such as body temperature and environmental conditions.
The word "Livor Mortis" is derived from Latin. "Livor" means "bluish color" or "lividity", and "Mortis" translates to "of death" in Latin. Together, "Livor Mortis" refers to the discoloration of the skin that occurs after death due to the settling of blood in lower areas of the body.