1. Signal arrives at the end of the neuron - An electrical message (action potential) reaches the axon terminal of the sending neuron., 2. Calcium channels open - Special gates open in response to the signal, letting calcium ions inside., 3. Calcium ions enter the neuron - Calcium flows into the axon terminal from outside the cell., 4. Vesicles move to the edge - Tiny bubbles filled with chemicals (synaptic vesicles) move toward the neuron’s edge., 5. Neurotransmitters are released - Vesicles pop and release chemical messengers into the synaptic gap., 6. Neurotransmitters cross the gap - Chemicals float across the small space between neurons (synaptic cleft)., 7. Neurotransmitters bind to receptors - Chemicals attach to special receptors on the receiving neuron., 8. New signal starts in the next neuron - The receiving neuron gets the message and starts a new electrical signal., 9. Neurotransmitters are cleared - Chemicals are broken down, taken back up, or drift away to stop the message.,

Synaptic Transmission and Steps

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