What are two actions induced by psychotropic drugs that may lead to receptor "up-regulation"?
What will be an ideal response?
Any drug action that results in a lower than normal activity at receptors for an extended period of time (generally on the order of several hours) may lead to receptor "up-regulation", e.g., a drug antagonist may bind to them and prevent neurotransmitter (NT) activation or the drug may increase the levels of the NTs for those receptors by reducing the NT reuptake, by enhancing NT release, by reducing NT metabolic degradation, by activating autoreceptors (which reduces NT release or synthesis), by decreasing the firing of neurons that release the NT, etc.
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The development of formal operations in adolescence leads to ______
a. extroverted behavior b. a lessening of self-analysis compared to preoperational thought c. overconfidence and egocentrism d. thinking in terms of concrete things
Approximately _____ percent of all babies born in the United States have five-minute Apgar scores in the "excellent" range
A) 69 B) 79 C) 89 D) 99