The terminal buttons of a neuron contain synaptic vesicles that house neurotransmitters, the chemical messengers of the nervous system.
A cell body, an axon, and a dendrite are the three basic components of a neuron. The nucleus, which regulates the cell's functions and houses its genetic material, is located inside the cell body. The axon resembles a long tail and carries signals out of the cell.
In healthy people, synaptic vesicles release neurotransmitters into the synapses as the neuronal signal travels quickly down the axon to the terminal buttons. The synapse, which connects two neurons, is a very small area.
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