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The Columbia Electronic Encyclopedia (2013) defines 'death' as: cessation of all life (metabolic) processes. Death may involve the organism as a whole (somatic death) or may be confined to cells and tissues within the organism. Causes of death in human beings include injury, acute or chronic disease, and neoplasia (cancer). The physiological death of cells that are normally replaced throughout life is called _____________; the death of cells caused by external changes, such as an abnormal lack of blood supply, is called necrosis.

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The two leading causes of death for both men and women in the United States are heart disease and ___________.

Farlex Partner Medical Dictionary (2012) defines' death' as: The cessation of life. In lower multicellular organisms, death is a gradual process at the cellular level, because tissues vary in their ability to withstand deprivation of oxygen; in higher organisms, a cessation of integrated tissue and organ functions; in humans, manifested by the loss of heartbeat, by the absence of spontaneous breathing, and by _______________________.

Uniform Determination of Death Act (1980, US) defines 'death' as: An individual who has sustained either (1) irreversible cessation of circulatory and respiratory functions, or (2) irreversible cessation of all functions of the ____________, including the brain stem, is dead. A determination of death must be made in accordance with accepted medical standards.

_________________ is the study of death—delves into matters as diverse as the cultural anthropology of the notion of soul, the burial rites and practices of early civilizations, the location of cemeteries in the Middle Ages, and the conceptual difficulties involved in defining death in an individual whose brain is irreversibly dead but whose respiration and heartbeat are kept going by artificial means.