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Cards In This Set
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A brief change in a neuron's electrical charge.
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Action potential
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An inherited characteristic that increased in a population (through natural selection) because it helped solve a problem of survival or reproduction during the time it emerged.
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Adaptation
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Research studies that assess hereditary influence by examining the resemblance between adopted children and both their biological and their adoptive parents.
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Adoption studies
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Axons that carry information inward to the central nervous system from the periphery of the body.
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Afferent nerve fibers
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A chemical that mimics the action of a neurotransmitter.
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Agonist
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A chemical that opposes the action of a neurotransmitter.
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Antagonist
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The system of nerves that connect to the heart, blood vessels, smooth muscles, and glands.
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Autonomic nervous system (ANS)
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A long, thin fiber that transmits signals away from the neuron cell body to other neurons, or to muscles or glands.
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Axon
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Any overt (observable) response or activity by an organism.
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Behavior
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An interdisciplinary field that studies the influence of genetic factors on behavioral traits.
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Behavioral genetics
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The brain and the spinal cord.
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Central nervous system (CNS)
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The convoluted outer layer of the cerebrum.
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Cerebral cortex
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The right and left halves of the cerebrum.
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Cerebral hemispheres
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A solution that fills the hollow cavities (ventricles) of the brain and circulates around the brain and spinal cord.
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Cerebrospinal fluid (CSF)
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Threadlike strands of DNA (deoxyribonucleic acid) molecules that carry genetic information.
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Chromosomes
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