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Death can be described as all of the following: End of life – life is the characteristic distinguishing physical entities having signaling and self-sustaining processes from those that do not, [1] [2] either because such functions have ceased (), or because they lack such functions and are classified as inanimate.
The human skull is used universally as a symbol of death. [1]Death is the end of life; the irreversible cessation of all biological functions that sustain a living organism. [2]
Per the United Kingdom Medical Royal Colleges, a diagnosis of brain death is a two-fold process including 1) identifying the cause of irreversible brain damage and excluding reversible causes of brain damage and 2) conducting a series of clinical and laboratory tests to assess brain stem function. [7] [8]
Death is the termination of all vital functions or life processes in an organism or cell. [ 31 ] [ 32 ] One of the challenges in defining death is in distinguishing it from life. Death would seem to refer to either the moment life ends, or when the state that follows life begins. [ 32 ]
How humans understand and approach the process dying differs across cultures. [5] In some cultures, death is the complete termination of life. [5] In other cultures, death can include altered states of being, like sleep or illness. [5]
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 ...
Biological processes are those processes that are necessary for an organism to live and that shape its capacities for interacting with its environment. Biological processes are made of many chemical reactions or other events that are involved in the persistence and transformation of life forms. [1]
Overview of signal transduction pathways involved in apoptosis. 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.