Answer :
The synaptic vesicles in presynaptic neurons releases a chemical transmitter which is also known as Neurotransmitter, stimulates the ionic channels in the postsynaptic neuron.
What is Neurotransmitter ?
A neuron releases a signaling chemical called a neurotransmitter across a synaptic gap to influence another cell. Any major body component or target cell that receives the signal may be another neuron, but it could also be a gland or muscle cell.
These signals enable you to move your limbs, experience sensations, maintain heartbeat, as well as receive and process all the information your body receives from other internal body components and your environment. From one neuron (nerve cell) to the following target cell, neurotransmitters transfer chemical signals, or "messages."
what is presynaptic neuron ?
A postsynaptic neuron sends signals away from the synapse, whereas a presynaptic neuron sends signals toward a synapse. The synapse, a juncture where the terminal end of an axon touches another neuron, is where information is transmitted from one neuron to another.
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