Name the theory of aging that suggests that the adverse physical effects of aging result from gradual loss of control mechanisms in the pituitary and hypothalamus:
a. Free radical theory
b. Programmed theory
c. Stochastic theory
d. Neuroendocrine theory
D
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A Incorrect. The free radical theory attributes aging to the accumulation of de-structive products of metabolic oxidation.
B Incorrect. The programmed theory attributes aging to cells' exhausting a prede-termined number of replications.
C Incorrect. A stochastic theory attributes aging to the accumulation of random damage to DNA and other molecules.
D Correct. The neuroendocrine theory attributes aging to gradual changes in or loss of the mechanisms that control the organs through chemical signals.
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