NUR 2214 Module 2 Quiz Overview
- Common Biological Theories of Aging
Answer
- Free Radical Theory
- Cross Linkage Theory
- Biological Clock Theory
- Wear and Tear Theory
- The Free Radical Theory
Answer
states that "free radicals" are formed from incomplete molecule formation or overexposure to harmful substances. This leads to the destruction of healthy DNA, cells, and connective tissues reducing function and viability. As an individual ages, "free radicals" destroy healthy cells and tissues more readily, this predisposes the individual to various diseases.
- The Cross-Linking Theory
Answer
Also referred to as the glycosylation theory of aging, states that accumulation of cross-linked proteins damages cells and tissues, slowing down bodily processes resulting in aging.
- Free Radical
Answer
Molecules that are harmful and unstable that are produced by process of metabolism or exposure to harmful substances 1 / 2
Free radical spread can be limited by -smoking cessation -limiting sun exposure -limiting UV light exposure -Diet management
- Antioxidants
Answer
- neutralizes free radicals
- can be found in food elements such as in vitamins and various fruits and vegetables
- Diseases often seen in older adults that can be caused by free radicals
Answer
- cancers
- diabetes
- arthritis
- atherosclerosis
- Biological Clock Theory
Answer
The theory that cell-reproduction and death of cells is genetically preprogrammed. This helps determine a person's life span.
**Note that this varies from person to person**
- Name some manifestations of cell division loss associated with aging
- / 2
Answer