Term
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Definition
| Irreversible loss of functioning in the entire brain |
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Term
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Definition
Active: mercy killing
Passive: let die of natural causes |
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Term
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Definition
| not killing someone but making available to a person who wishes to die the means by which she may do so |
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Term
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Definition
| Allows people to state that they do not want extraordinary medical procedures applied to them if they become hopelessly ill. |
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Term
| Programmed theories of aging |
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Definition
| emphasize the systematic genetic control of aging processes |
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Term
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Definition
| Haphazard processes that cause errors in cells to accumulate and organ systems deteriorate |
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Term
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Definition
| A ceiling on the number of years that anyone lives |
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Term
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Definition
| Premature aging disorder caused by a spontaneous mutation in a single gene |
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Term
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Definition
| Cells from human embryos could divide only a certain number of times - 50 times, plus minus 10 |
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Term
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Definition
| Stretches of DNA that form the tips of chromosomes and that shorten with every cell division |
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Term
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Definition
| Toxic and chemically unstable by-products of metabolism |
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Term
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Definition
| Prevent oxygen from combining with other molecules to produce free radicals |
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Term
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Definition
| A highly nutritious but severly restricted diet representing a 30-40% or more cut in normal caloric intake |
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