In order to have an effect, drugs used to treat psychological disorders must be able to:
A) reduce neurotransmitter activity in the brain.
B) increase neurotransmitter activity in the brain.
C) cross from one side of a synapse to the other.
D) cross the blood-brain barrier.
Answer: D
Rationale: All psychotropic drugs are designed to cross the blood–brain barrier, a network of tightly packed cells that only allow specific types of substances to move from the bloodstream to the brain. Once in the brain, the drugs have their effect by either increasing or decreasing neurotransmitter activity.
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a. true b. false
Which of the following statements about the factors related to depression is true?
A) Heredity plays only a minor role in depression. B) Genes can induce depression by affecting the balance of neurotransmitters in the brain. C) Biological changes associated with puberty explain why girls are more prone to depression than boys. D) Late-maturing girls are especially prone to depression.