Exam 3: A: Biological Psychology

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Serotonin affects neurons involved in sleep,appetite,and mood.

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Humans have 23 pairs of chromosomes.

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A heritability estimate around .53 for a trait indicates that 0.53% of the individual differences in the trait can be attributed to genetic factors in the population that was studied.

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Transcranial magnetic stimulation uses a powerful magnetic field to temporarily stimulate or inactivate neural circuits.

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The autonomic nervous system controls skeletal muscles.

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Neurons greatly outnumber glial cells in the brain.

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The action potential is a chemical substance that alters the activity of a receiving neuron.

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After split-brain surgery,patients are unable to walk or to care for the physical needs of everyday life.

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Monozygotic twins are more likely to share a trait with high heritability than are dizygotic twins.

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The brain stem's two main structures are the medulla and the pons.

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