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Death is the end of life; the irreversible cessation of all biological functions that sustain a living organism. [ 1] The remains of a former organism normally begin to decompose shortly after death. [ 2] Death eventually and inevitably occurs in all organisms.
Thanatology is the scientific study of death and the losses brought about as a result. It investigates the mechanisms and forensic aspects of death, such as bodily changes that accompany death and the postmortem period, as well as wider psychological and social aspects related to death. It is primarily an interdisciplinary study offered as a ...
The stages that follow shortly after death are: Corneal opacity or "clouding". Pallor mortis, paleness which happens in the first 15–120 minutes after death. Livor mortis, or dependent lividity, a settling of the blood in the lower (dependent) portion of the body. Algor mortis, the reduction in body temperature following death.
In law, medicine, and statistics, cause of death is an official determination of the conditions resulting in a human 's death, which may be recorded on a death certificate. A cause of death is determined by a medical examiner. In rare cases, an autopsy needs to be performed by a pathologist. The cause of death is a specific disease or injury ...
Clinical death. Clinical death is the medical term for cessation of blood circulation and breathing, the two criteria necessary to sustain the lives of human beings and of many other organisms. [ 1] It occurs when the heart stops beating in a regular rhythm, a condition called cardiac arrest. The term is also sometimes used in resuscitation ...
An example of a type of accident that can cause death is a traffic collision . List of accident types. Biological aging –. Disease –. Terminal illness. Injury. Wound. Mortal wound. Killing – causing the death of a living organism, usually for the purpose of survival, including the defense of self and or others.
Senescence ( / sɪˈnɛsəns /) or biological aging is the gradual deterioration of functional characteristics in living organisms. Whole organism senescence involves an increase in death rates or a decrease in fecundity with increasing age, at least in the later part of an organism's life cycle. [ 1][ 2] However, the resulting effects of ...
Cell death. Cell death is the event of a biological cell ceasing to carry out its functions. This may be the result of the natural process of old cells dying and being replaced by new ones, as in programmed cell death, or may result from factors such as diseases, localized injury, or the death of the organism of which the cells are part.