Oxidative Free Radical Theory of Aging

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Questions and Answers

What is the primary cause of aging according to the oxidative free radical theory?

  • Hormonal changes
  • Genetic predisposition
  • Oxidative metabolism and free radicals (correct)
  • Decreased physical activity

Which theory emphasizes the significance of how cells use oxygen?

  • Neuroendocrine theory
  • Oxidative free radical theory (correct)
  • Stochastic theories
  • Connective tissue theory

According to the connective tissue theory, what primarily contributes to the damage of cells and tissues?

  • Lipid oxidation
  • Binding of glucose to proteins (correct)
  • Free radical accumulation
  • Oxidative modification of DNA

Which of the following best describes the stochastic theories of aging?

<p>They involve random cellular events (A)</p> Signup and view all the answers

What effect do free radicals have according to the content?

<p>They cause extensive damage to DNA (A)</p> Signup and view all the answers

Who proposed the connective tissue theory of aging?

<p>Bjorksten (D)</p> Signup and view all the answers

What is a consequence of lipid oxidation in cell membranes?

<p>Damage to phospholipids and membrane permeability (A)</p> Signup and view all the answers

Which theory suggests there may be genes that affect both youth and aging processes?

<p>Neuroendocrine theory (C)</p> Signup and view all the answers

What is the primary outcome of the cross-linkage process in collagen molecules?

<p>Increase in density and decrease in nutrient transport (C)</p> Signup and view all the answers

What do programmed theories of aging assert about the role of aging in human biology?

<p>Aging is programmed into our body systems (D)</p> Signup and view all the answers

How does the function of the immune system change as individuals age, according to the content?

<p>There is a decrease in immune function (A)</p> Signup and view all the answers

What is one effect of stimulating and releasing hormones being out of sync?

<p>Increase in disease across multiple organs (A)</p> Signup and view all the answers

What do cross-linkage agents mainly include?

<p>Unsaturated fats and polyvalent metal ions (D)</p> Signup and view all the answers

According to nonstochastic theories, what underlying issue is related to the aging process?

<p>Faulty immunological function (C)</p> Signup and view all the answers

What is a potential consequence of aging on T-cell differentiation?

<p>Loss of differentiation leading to confusion about foreign bodies (D)</p> Signup and view all the answers

What is the relationship between aging and the body's perception of cells?

<p>Old cells are treated as foreign bodies by the immune system (D)</p> Signup and view all the answers

What is a primary focus of the gerotranscendence theory?

<p>Enhanced feeling of universal awareness (A)</p> Signup and view all the answers

Which effect does aging have on social interactions according to the gerotranscendence theory?

<p>Decreased interest in superfluous interactions (B)</p> Signup and view all the answers

How does age stratification theory view the relationship between aging and society?

<p>Aging and society are interrelated (A)</p> Signup and view all the answers

Which of the following best describes a shift in focus due to the age stratification theory?

<p>From individual experiences to broader societal contexts (A)</p> Signup and view all the answers

What change occurs in personal interests as individuals age, according to the gerotranscendence theory?

<p>Decreased interest in material things (C)</p> Signup and view all the answers

What aspect of time and space tends to change as people age, according to the theory?

<p>Perspective on time and space varies (C)</p> Signup and view all the answers

What is emphasized about social activities as people age according to the gerotranscendence theory?

<p>Being more selective about chosen activities (D)</p> Signup and view all the answers

Which of the following best represents a consequence of age stratification in society?

<p>Dynamic changes in individual aging processes (C)</p> Signup and view all the answers

What does the person-environment-fit theory primarily focus on?

<p>Functional competence in relation to the environment (A)</p> Signup and view all the answers

According to the psychosocial theory, what developmental crisis do older adults typically face?

<p>Ego integrity versus despair (D)</p> Signup and view all the answers

Which of the following factors can affect functional competence according to the content?

<p>Motor skills and cognitive capacity (A)</p> Signup and view all the answers

In Peck's expansion of Erickson's theory, which developmental task is related to ego differentiation?

<p>Work role preoccupation (D)</p> Signup and view all the answers

What impact does aging have on functional ability as per the content provided?

<p>It may decrease functional ability based on environmental demands. (D)</p> Signup and view all the answers

What is the primary focus of the gerotranscendence theory?

<p>Understanding the psychological changes in aging (D)</p> Signup and view all the answers

Which of the following statements best describes how lower functioning individuals handle environmental demands?

<p>They can tolerate fewer environmental demands. (C)</p> Signup and view all the answers

What outcome does the person-environment-fit theory suggest when a person cannot meet environmental demands?

<p>Development of despair (B)</p> Signup and view all the answers

What is the first level in Maslow's hierarchy of needs?

<p>Physiologic (B)</p> Signup and view all the answers

What does the subculture theory primarily address?

<p>The distinct interests and norms of older adults (A)</p> Signup and view all the answers

According to Maslow, what can impede self-actualization in older adults?

<p>Physical and environmental constraints (B)</p> Signup and view all the answers

What psychological outcome may result from failing to grow according to Maslow's theory?

<p>Depression and feelings of failure (A)</p> Signup and view all the answers

What is a key aspect of continuity theory?

<p>It connects personality to life roles and happiness (D)</p> Signup and view all the answers

What does Maslow's theory suggest is necessary for self-actualization?

<p>A stimulating and challenging environment (D)</p> Signup and view all the answers

What function does the subculture theory serve for older adults?

<p>It offers a way to reject societal norms (D)</p> Signup and view all the answers

How is Maslow's hierarchy of needs described in its function?

<p>A multidirectional and dynamic process (D)</p> Signup and view all the answers

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Study Notes

Oxidative Free Radical Theory

  • Aging attributed to oxidative metabolism and free radicals as by-products.
  • Free radicals damage DNA, proteins, and cell membranes, leading to malignancy and accelerated aging.
  • Key figure: Hayflick (1985) emphasized oxygen usage and cellular aging.

Stochastic Theories

  • Propose that aging results from random damage over time.
  • Free radicals generated through oxygen use, especially during physical exertion.

Connective Tissue Theory

  • Also known as cross-linking or glycosylation theory, proposed by Johan Bjorksten in 1942.
  • Accumulation of cross-linked proteins damages cells, affecting metabolism and increasing aging effects.
  • Glucose binding to proteins disrupts molecular structures, leading to various health issues.

Neuroendocrine Theory

  • Hypothalamus orchestrates hormonal responses via the pituitary gland, impacting overall health.
  • Disruption in hormonal synchronization increases disease susceptibility.
  • Aging linked to decreased immune function and altered responses to infections and cancers.

Programmed Theory

  • Suggests aging is a genetically programmed aspect of life, not merely biological wear and tear.
  • Cells have a finite number of divisions, setting a limit on lifespan.
  • Older individuals experience a less effective immune response, mistaking regular cells for foreign entities.

Psychological Theory

  • Emphasizes emotional and cognitive aspects of aging, including how societal roles and perceptions shape aging experiences.

Age Stratification Theory

  • Highlights how aging affects and is affected by societal structures, categorizing individuals into age-specific groups.
  • Observes reciprocal changes among individuals and society, focusing on resource acquisition and roles.

Human Needs Theory

  • Developed by Maslow, identifying five tiers of human needs crucial for motivation:
    • Physiologic
    • Safety and security
    • Love and belonging
    • Self-esteem
    • Self-actualization
  • Emphasizes the importance of meeting these needs for older adults to avoid feelings of failure and depression.

Subculture Theory

  • Older adults create a distinct subculture to maintain identity against societal rejection.
  • This subculture possesses unique norms, interests, and beliefs separating them from younger generations.

Continuity Theory

  • Suggests that personality influences behavior and roles, impacting overall happiness in later life.
  • Individuals tend to maintain their established habits and values as they age.

Person-Environment-Fit Theory

  • Introduced by Lawton; emphasizes the relationship between an older adult's functional competence and their environment.
  • Each developmental stage presents crises that must be resolved for healthy aging.

Gerotranscendence Theory

  • Developed from Erickson's stages of development, extends to seven stages in late adulthood.
  • Focuses on achieving ego integrity and finding meaning through life experiences.

Conclusion

  • Various theories offer insights into the aging process, emphasizing biological, psychological, and sociological factors.
  • Understanding these theories aids in improving care and enhancing quality of life for older adults.

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