Neurotransmitters – Flashcards
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Synaptic Gap
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a tiny space between the axon terminal of one neuron and the dendrite of an adjoining neron
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Synapse
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space between two neurons
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Neurotransmitter
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a chemical messenger that travels across the synapse from one neuron to the next and influences wheter a neuron will generat and action potential
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Presynaptic neuron
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the neuron that sends the signal across the gap
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Postsynaptic neuron
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a neuron on the receiving end of a synapse
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Excitatory effect
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a neurotransmitter effect that makes it more likely that the receiving neuron will generate an action potential
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Inhibitory effect
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a neaurotransmitter effect taht makes it less likely that the receiving neuron wil generate an action potential(impulse)
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Synaptic buttons
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a small structure like a sac that stores chemicals called neurotransmitters
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Acetylcholine
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a neurotransmitter that triggers muscle contraction and affects learning and memory
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Norepinephrine
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neurotransmitter that is involved in arousal and the fight-or-flight system (also mood, sleep, and learning)
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Dopamine
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neurotransmitter involved in regulating emotions, speficically rewarding sensations. Also involved in movement, with links to Parkinson's disease.
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Seratonin
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affects mood, hunger,sleep, and arousal. undersupply linked to depression
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Endorphins
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neurotransmitters that give one a feeling of well-being, euphoria or eliminate pain
