Examlex
How does Erikson's theory explain the differences between the psychological stages of early adulthood, middle adulthood, old age, and late life?
Myelin
A fatty white substance that surrounds the axon of some nerve cells, forming an electrically insulating layer and speeding up the transmission of nerve impulses.
Presynaptic Neuron
The neuron that releases neurotransmitters from its terminal buttons to communicate with a postsynaptic neuron across a synapse.
Neurotransmitters
Chemical messengers in the nervous system that transmit signals across the synapse from one neuron to another.
Reuptake
The process by which neurotransmitters are absorbed back into the nerve cell that released them, effectively stopping their action in the synapse.
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