An experimental drug that reduces the release of chemicals that inhibit axon growth may:

a. inhibit the production of neurotrophins.
b. increasing glial scarring.
c. enhance the activity of reactive astrocytes.
d. improve recovery from traumatic brain injury


Ans: D

Psychology

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Kevin is in the exhaustion stage of Selye's general adaptation syndrome. Which of the following is most likely to occur?

A) His heart and respiration rates slow down and his muscles become fatigued. B) His endocrine and sympathetic activity is higher than in the alarm stage. C) His hypothalamus secretes corticotrophin-releasing hormones, which in turn causes his pituitary gland to secrete cortisol. D) His body is activated and he experiences a fight-or-flight reaction.

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Which of the following statements about adoption is true?

A) In Western Europe, more unwed mothers give up their babies than in the past. B) Adopted children tend to have fewer emotional difficulties than other children. C) In North America and Western Europe, the availability of healthy babies has declined. D) Fewer adoptive parents are accepting children who have known developmental problems.

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What brain structures are involved in the processing of conditioned fear?

A. thalamus, parietal lobe, amygdala B. cerebral fluid, thalamus, hypothalamus C. amygdala, pituitary gland, visual cortex D. thalamus, amygdala, hypothalamus

Psychology

Reviews of research into mindfulness meditation find that people who use it

A) ?experience an increase in anxiety but a decrease in tension. B) ?can manage stress better as well as stress-related disorders. C) ?benefit the same regardless of how much they practice it. D) ?can alleviate depression, but not prevent relapse into it.

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