synaptic transmission

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11 Terms

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synaptic transmission definition

how neighbouring neurons communicate with each other

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what are the two main neurotransmitters

dopamine, adrenaline

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1st stage of synaptic transmission

electrical impulse travels down presynaptic neuron

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2nd stage of synaptic transmission

vesicles storing neurotransmitter bind to presynaptic membrane

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3rd stage of synaptic transmission

neurotransmitters get released and diffuse across synapse

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4th stage of synaptic transmission

neurotransmitters bind to post-synaptic neuron receptor sites

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5th stage of synaptic transmission

electrical signal is sent to the next neuron

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6th stage of synaptic transmission

left over neurotransmitters in synapse are reabsorbed back up presynaptic membrane

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excitation

when a neurotransmitter increases the positive charge of the post synaptic neuron, increasing the likelihood that the post-synaptic neuron will pass on the electrical charge

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inhibition

when a neurotransmitter increases the negative charge of the postsynaptic neuron making it less likely that the postsynaptic neuron will pass on the electrical impulse

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summation

the total charge after adding together the positive and negative charge of the post-synaptic neuron