Which of the following has not been suggested as an explanation for the teratogenic effects of alcohol?
a. Alcohol interferes with normal cellular production, differentiation, and migration.
b. Alcohol metabolism requires substantial amounts of oxygen, making less oxygen available to the fetus.
c. Alcohol increases the muscular activity of the fetus, making less oxygen available for cellular needs.
d. Alcohol causes delays and errors in neuronal migration in the brain.
C
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Which of the following scenarios describes a cyclical pathway that can develop and eventually lead to obesity?
A. A child stops eating because of low self-esteem, becomes anorexic, and then is successfully treated but still has negative feelings about her- or himself. B. A thin child eats normally but is teased about his or her weight and begins to diet. C. A child eats because of feelings of depression and low self-esteem, gains weight, is rejected by peers, binges, and continues to gain weight. D. A thin child binges because of depression and low self-esteem, purges and feels better, then feels safe to binge again, eating more later.
Your great-uncle, who is 70 years old, was diagnosed two years ago with Alzheimer's disease. What is his life expectancy?
a. 73 years b. 78 years c. 82 years d. 86 years