Medical examinerThe medical examiner is an appointed official in some American jurisdictions who is trained in pathology that investigates deaths that occur under unusual or suspicious circumstances, to perform post-mortem examinations, and in some jurisdictions to initiate inquests. In the US, there are two death investigation systems, the coroner system based on English law, and the medical examiner system, which evolved from the coroner system during the latter half of the 19th century.
Manner of deathIn many legal jurisdictions, the manner of death is a determination, typically made by the coroner, medical examiner, police, or similar officials, and recorded as a vital statistic. Within the United States and the United Kingdom, a distinction is made between the cause of death, which is a specific disease or injury, versus manner of death, which is primarily a legal determination versus the mechanism of death (also called the mode of death) which does not explain why the person died or the underlying cause of death and can include cardiac arrest or exsanguination.
CoronerA coroner is a government or judicial official who is empowered to conduct or order an inquest into the manner or cause of death, and to investigate or confirm the identity of an unknown person who has been found dead within the coroner's jurisdiction. In medieval times, English coroners were Crown officials who held financial powers and conducted some judicial investigations in order to counterbalance the power of sheriffs or bailiffs.
AutopsyAn autopsy (post-mortem examination, obduction, necropsy, or autopsia cadaverum) is a surgical procedure that consists of a thorough examination of a corpse by dissection to determine the cause, mode, and manner of death; or the exam may be performed to evaluate any disease or injury that may be present for research or educational purposes. For animals, the term necropsy is generally reserved. Autopsies are usually performed by a specialized medical doctor called a pathologist.
DeathDeath is the irreversible cessation of all biological functions that sustain an organism. For organisms with a brain, death can also be defined as the irreversible cessation of functioning of the whole brain, including the brainstem, and brain death is sometimes used as a legal definition of death. The remains of a former organism normally begin to decompose shortly after death. Death is an inevitable process that eventually occurs in all organisms. Some organisms, such as Turritopsis dohrnii, are biologically immortal.