chp 16 Flashcards
Total Brain Death
complete shut down of the brain
Assisted Suicide
Jack Kevorkian and others made cocktails to kill people
Making available to individuals who wish to commit suicide the means by which they may do so, such as when a physician provides a terminally ill patient who wants to die with enough medication to overdose.
Euthanasia
Literally, “good death”; specifically, hastening, either actively or passively, the death of someone suffering from an incurable illness or injury.
Living will
A document, also called an advance directive, in which people state in advance that they do not wish to have extraordinary medical procedures applied if they are hopelessly ill.
Programmed theories of aging
Theories of biological aging that emphasize the systematic genetic control of aging processes
Damage theories of aging
Theories of the biology of aging that emphasize random, haphazard errors and damage associated with such processes as the production of free radicals as explanations of why we all age and die.
Maximum life span
Theories of the biology of aging that emphasize random, haphazard errors and damage associated with such processes as the production of free radicals as explanations of why we all age and die.
Hayflick Limit
The estimate that human cells can double only 50 times, plus or minus 10, and then will die.
Telomeres
A stretch of DNA that forms the tip of a chromosome and that shortens after each cell division, serving as an aging clock and timing the death of cells.
Epigenetic aging clock
A measure of patterns of DNA methylation that are closely associated with aging.
Free radicals
Chemically unstable byproducts of metabolism that have an unpaired electron and react with other molecules to produce toxic substances that damage cells and contribute to aging.
Antioxidants
Vitamins C, E, and similar substances that may increase longevity, although not for long, by inhibiting the free radical activity associated with oxidation and in turn preventing age-related diseases.
Caloric restriction
A technique demonstrated to extend the life span of laboratory animals involving a highly nutritious but severely calorie-restricted diet.
Denial
A defense mechanism in which anxiety-provoking thoughts are kept out of, or isolated from, conscious awareness.
Bereavement
A state of loss that provides the occasion for grief and mourning.