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Ageing (or aging in American English) is the process of becoming older. The term refers mainly to humans, many other animals, and fungi, whereas for example, bacteria, perennial plants and some simple animals are potentially biologically immortal. [1] In a broader sense, ageing can refer to single cells within an organism which have ceased dividing, or to the population of a species. [2]
The certification applies to somatic death, corresponding to death of the person, which has varying definitions but most commonly describes a lack of vital signs and brain function. Death at the level of cells, called molecular death or cell death, follows a matter of hours later.
Signs of dementia include getting lost in a familiar neighborhood, using unusual words to refer to familiar objects, forgetting the name of a close family member or friend, forgetting old memories, and being unable to complete tasks independently.
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.
But sometimes the cause of memory lapses is inside your head because of how your brain is aging. As you get older, your brain gets “noisier.”. It’s like when a radio goes a little off the ...
Algor mortis (from Latin algor 'coldness', and mortis 'of death'), the third stage of death, is the change in body temperature post mortem, until the ambient temperature is matched. This is generally a steady decline, although if the ambient temperature is above the body temperature (such as in a hot desert ), the change in temperature will be positive, as the (relatively) cooler body ...
Old age is the range of ages for people nearing and surpassing life expectancy. People of old age are also referred to as: old people, elderly, elders, seniors, senior citizens, or older adults. [1] Old age is not a definite biological stage: the chronological age denoted as "old age" varies culturally and historically. [2] Some disciplines and domains focus on the aging and the aged, such as ...
Aging brain. Aging of the brain is a process of transformation of the brain in older age, including changes all individuals experience and those of illness (including unrecognised illness). Usually this refers to humans. Since life extension is only pertinent if accompanied by health span extension, and, more importantly, by preserving brain ...