In response to an action potential, the releases neurotransmitters. myelin sheath

synaptic vesicles

Explanation: At the free end, the axon of the presynaptic neuron breaks into minute branches that terminate in small swellings known as synaptic knobs which contain synaptic vesicle where the neurotransmitters produced by the cell body is stored and released in response to action potential

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a factory opens that mass-produces light bulbs.

explanation:

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