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Biological And Physical Process Of Aging - College Essays

Biological And Physical Process Of Aging

The aging process is difficult to analyze because of the way that the body’s organ systems work together. The breakdown of one structure will ultimately affect the function of others. The medical field of gerontology deals with examining the biological changes of aging, both passive and active, that occur at the molecular and cellular levels. This paper will seek to explore those changes, and the affect that they have on the process of aging.
Aging as a passive process involves the breakdown of structures and the resulting slowing of functions. At the molecular level, passive aging is seen as the degeneration of the elastin and collagen proteins of connective tissues. These proteins ...

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that is being supplied to the cell.
This cellular degeneration may be set into action by highly reactive chemicals known as free radicals. These molecules have an unpaired electron in the outermost valence shell. This causes the molecule to grab electrons from other molecules, setting into motion a chain reaction that destabilizes them, and causes death of the cell. These free radicals are the normal by-product of metabolism, and can also form due to exposure to radiation or toxic chemicals. Enzymes that usually inactivate these free radicals diminish in later years, thus increasing their danger.
The active process of aging involves new activities or the appearance of new substances. This process actually begins at birth, as certain cells begin to die. As the cells die, old structures are destroyed, and new ones will take their place. The number of neurons in the fetal brain, for example, is halved as only certain ones are spared from death. The appearance of lipofuscin may ...

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Biological And Physical Process Of Aging. (2008, July 10). Retrieved November 22, 2024, from http://www.essayworld.com/essays/Biological-And-Physical-Process-Of-Aging/86565

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PAPER DETAILS

Added: 7/10/2008 10:09:33 AM
Category: Science & Nature
Type: Premium Paper
Words: 645
Pages: 3

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