By Category Explore the best Living sites in Greenville and around the world. Search 900,000 of the world's best sites . Search The Reflector Suggest a Greenville website.
Most people realize that vital organs begin to lose function with aging.
Aging changes have been seen in all of the body's cells, tissues, and organs. These changes affect the functioning of all body systems. Living tissue is made up of cells. There are many different types of cells, but all have the same basic structure. Tissues are layers of similar cells that perform a specific function.