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10 Cards in this Set
- Front
- Back
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synapse--
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a specialized gap between neurons in which chemical messengers, called neurotransmitters, are released and then migrate to receptor sites where they deliver their electrochemical signals.
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reflex--
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an automatic muscular response to a stimulus.
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reflex arc--
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the circuit by which a signal is delivered from a sensory neuron to a muscle via an interneuron and motor neuron; the reflex arc can produce an automatic response by bypassing the brain.
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temporal summation--
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the cumulative effect of repeated stimuli over a brief period of time.
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spacial summation--
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the cumulative effect of inputs originating in different areas of the body.
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postsynaptic neuron--
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the neuron that receives the electrochemical signal being delivered across the synapse.
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presynaptic neuron--
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the neuron that delivers the electrochemical signal across the synapse.
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excitatory postsynaptic potential (EPSP)--
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the graded depolarization of the membrane in the postsynaptic neuron.
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inhibitory postsynaptic potential (IPSP)--
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the temporary hyperpolarization of the membrane the postsynaptic neuron.
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spontaneous firing rate--
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the baseline rate at which the postsynaptic neuron produces action potentials, even without synaptic input.
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