While the mechanisms through which opioid neurons inhibit the activity of neurons remains unclear, one known mechanism is:
a. reduced activity of G-proteins associated with opioid receptors.
b. increased influx of Cl-.
c. blockade of sodium channels.
d. the activation of inwardly rectifying K+ channels.
Ans: D
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Which of the following is the MOST accurate conclusion one can draw about Type A behavior and the risk of coronary heart disease?
a. The Type A person is six times more likely to suffer from coronary heart disease than the Type B person. b. As it turns out, there is actually very little connection between stress and coronary heart disease. c. The Type A person is more resistant to coronary heart disease than the Type B person. d. The relationship between the two seems more modest than originally thought, with Type A behavior increasing coronary risk only for some.
In order to be diagnosed with ADHD, ________ must be present.
A. hyperactive behavior that alternates with periods of distraction B. either a pattern of inattention or a pattern of hyperactivity and impulsivity C. both patterns of inattention and hyperactivity/impulsivity D. none of these are correct
Tom has Huntington's disease. You would expect him to begin to show signs of nervous system deterioration
a. at birth. c. during adolescence. b. during childhood. d. during middle adulthood.
Overall, children of lesbian and gay parents can be distinguished from other families __________
A) because they are more likely to engage in adolescent delinquency B) because they have fewer friends and more anxiety and depression C) by issues related to living in discriminatory contexts D) by issues related to gender roles and gender expression