Biological And Physical Process Of Aging Essay -- essays research pape

The senescence process is difficult to analyze because of the mood that the bodys organ systems work together. The partitioning of one bodily structure will ultimately affect the function of others. The medical field of geriatrics 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 depravation of the elastin and collagen proteins of connective tissues. These proteins are primarily responsible for the smoothness and firmness of infantile skin. Consequently, when these proteins breakdown, the skin will sag, and the muscle will lose its firmness. Another compress of passive aging is the breakdown of lipids at the biochemical level. As aging membranes leak during this lipid degeneration, a fatty, brown pigment known as lipofuscin accumulates. As this happens, the mitochondria, or the powerhouse of the cell begins to break down, thereby fall the amount of energy 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 chai...