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15 Cards in this Set
- Front
- Back
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Heritability
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A statistical estimate of the fraction of observed measure of the overall amount of difference among people in a population that is caused by differences in heredity.
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Parts of the Neuron
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dendrite
cell body axon synaptic terminals synapse |
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Types of Neurons
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sensory neurons
motor neurons interneurons |
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sensory neurons
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detect information from the physical world and pass that info along to the brain
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motor neurons
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one of the three types of nerons, these efferent neurons direct muscles to contract or relax, therby producing movement.
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interneurons
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these neurons communicate only with other neurons, typically within a specific brain region.
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Action potential
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The nueral impulse that passes along the axon and subsequently causes the release of chemicals from the terminal buttons.
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Resting membrane potential
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the electrical charge of a neuron when it is not active.
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mylin sheath
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increases the speed of transmission along the axon.
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refactory period
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neuron recharges
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absolute
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no impluse from stimulation
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relative
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impulse if stimulus is strong enough.
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Events that end transmission
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reuptake
enzyme deactivation autoreceptors |
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reuptake
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the process where the neurotransmitter is taken back into the presynaptic terminal buttons, thereby stopping its activity.
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enzyme deactivation
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the process whereby the nuerotransmitter is destryoed by an enzyme, thereby terminating its activity.
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