What is the neuron before the synapse referred to as?
Presynaptic neuron
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What is the neuron after the synapse referred to as?
Postsynaptic neuron
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What happens when an electrical impulse reaches the end of the presynaptic neuron?
Neurotransmitters are released from synaptic vesicles into the synapses.
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What is a neurotransmitter?
A chemical messenger
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What happens after the neurotransmitter crosses the synapse?
It's taken up by the postsynaptic receptor sites.
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What happens after the neurotransmitter is taken up by the postsynaptic receptor sites?
It is converted back into an electrical impulse and the process of transmission occurs in another neuron.
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What is meant by excitation?
When a neurotransmitter increases the positive charge of the postsynaptic neuron. This increases the chance that neuron will fire and pass on the electrical impulse.
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What is meant by Inhibition?
When a neurotransmitter makes the charge of the postsynaptic neuron more negative. This decreases the chance that neuron will fire and pass on the electrical impulse..
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Name an example of a neurotransmitter that has an excitatory effect.
Adrenaline
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Name an example of a neurotransmitter that has an inhibitory effect.
Serotonin
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Other cards in this set
Card 2
Front
What is the neuron after the synapse referred to as?
Back
Postsynaptic neuron
Card 3
Front
What happens when an electrical impulse reaches the end of the presynaptic neuron?
Back
Card 4
Front
What is a neurotransmitter?
Back
Card 5
Front
What happens after the neurotransmitter crosses the synapse?
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