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20 Cards in this Set
- Front
- Back
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Action Potential
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a brief change in the neuron's electrical charge.
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Absolute refractory period
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the minimum length of time after an action potential during which another action potential can't begin.
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Synaptic cleft
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a microscopic gap between the terminal button of a neauron and the cell membrane of another neuron.
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postsynaptic cleft
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a voltage charge at the receptoer site on a postsynaptic cell membrane.
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reuptake
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a process in which neurotransmitters are sponged up from the synapic cleft by the presynaptic membrane.
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Agonist
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A chemical that mimcs the action of a neurotransmitter.
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Antagonist
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Achemical that opposes the action of a neurotransmitter.
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Cerebrospinal Fluid
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A solution that fills the hollow cavities o fthe brain an dcirculates around the brain and spinal cord.
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Blood-Brain Barrier
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A semipermiable membrane- like mechanism that stops some chemicals from passing between bloodstreams and the brain.
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Electroencephalograph (EEG)
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a device that monitors the electrical activity of the brain over time by means of recording electrodes attached to the suface of the scalp.
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Lesioning
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destroying a piece of the brain.
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Chromosomes
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Thread like strands of DNA molecules that carry genetic information
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Zygote
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A one celled organism formed by the union of a sperm and an egg.
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Genes
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DNA segments taht serve as the key functional units in heredity transmission
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Phenotype
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The ways in which a person's genotype is manifested in observable characteristics.
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Family Studies
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Scientific studies in which researchers assess heredity influence by examining blood relatives to see how much they resemble each other.
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Twin Studies
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A research design in which hereditary influence is assessed by comparing the resemblance of identical and fraternal twins with respect to a trait.
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Adoption Studies
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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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Genetic Mapping
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The process of determining the location and chemical sequence of specific genes on specific chromosomes.
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Glia Cells
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Cells found throughout the nervous system that provides structural support and insulation for neurons.
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