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The gate control theory assumes that pain experiences can be increased or decreased by
mechanisms in the brain and spinal cord.
Acetylcholine
A neurotransmitter in the nervous system involved in the activation of muscle cells and various types of signaling in the brain.
Synaptic Vesicles
Membrane-bound sacs in the presynaptic terminal of a neuron, containing neurotransmitters.
Secretion
The process by which substances are produced and released from cells or glands, often for specific functions in the body, such as digestion or hormone regulation.
Neurotransmitter
A chemical substance released at the end of a nerve fiber by the arrival of a nerve impulse and, by diffusing across the synapse or junction, causes the transfer of the impulse to another nerve fiber, a muscle fiber, or some other structure.
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