Which theory of aging suggests that the body becomes less able to ...

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Which theory of aging suggests that the body becomes less able to tolerate the self?
 
  a. Free radical theory
  b. Autoimmunity theory
  c. Wear-and-tear theory
  d. Biologic programming theory

Question 2

A mother asks the nurse when she should introduce solid foods into her infant's diet. What would be the most correct response?
 
  a. Introduce fruits and vegetables first.
  b. Mix foods to allow the infant variety.
  c. Introduce only one new food at a time.
  d. Introduce new foods at 24-hour intervals.

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Answer to Question 1

ANS: B
The autoimmunity theory holds that with aging, the body becomes less able to recognize or tolerate the self. As a result the immune system produces antibodies that act against the self.

Answer to Question 2

ANS: C
Only one new food should be introduced at a time, followed by several days between new foods. Cereals should be introduced first, followed by fruits and vegetables, and last meats. Food should not be mixed to allow the infant to develop interest in different foods and tastes.

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