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Synaptic Transmission
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== <span style="color: #FFFFFF;">Understanding</span> == Synaptic transmission is a '''Relay Race''' between electricity and chemistry. '''1. The Arrival (Electrical)''': An electrical "Action Potential" races down the axon. When it hits the end, it triggers the opening of "Calcium Channels." '''2. The Release (Chemical)''': The calcium causes the '''Vesicles''' to fuse with the cell wall, dumping their neurotransmitters into the '''Synaptic Cleft'''. This is like a key being thrown across a room. '''3. The Binding (Reception)''': The neurotransmitters find their specific '''Receptors''' on the next neuron (The "Lock"). * '''Excitatory''': Opens gates that make the next neuron more likely to fire. * '''Inhibitory''': Opens gates that make the next neuron ''less'' likely to fire. '''4. The Cleanup (Resetting)''': The brain must reset the synapse instantly. It does this via: * '''Reuptake''': Sucking the chemicals back in. * '''Enzymatic Degradation''': "Chopping up" the chemicals in the gap. This ensures the signal is "crisp" and doesn't just hang around forever. '''The "Chemical Soup"''': Your mood and behavior are determined by the balance of these chemicals. Too much Dopamine can lead to Schizophrenia; too little can lead to Parkinson's. Many medications (like SSRIs for depression) work by changing the speed of this "Cleanup" phase. </div> <div style="background-color: #8B0000; color: #FFFFFF; padding: 20px; border-radius: 8px; margin-bottom: 15px;">
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