These Are The Chemicals That Send Signals From The Axon Terminal Of One Neuron To Receptors On The Dendrite Of Another Neuron Through Synapses. Different Neurotransmitters Have Different Functions. Here Are Some Examples Of Neurotransmitters And Their Functions. Dopamine- Responsible For Reward-Inspired Learning. Highly Addictive Drugs Such As Cocaine Act Directly On Dopamine Receptors. Serotonin- Responsible For Regulation Of Mood, Sleep, And Appetite Epinepherine- (Also Known As Adrenaline) When Secreted Raises Heart Rate, Dilates Airways, Constricts Blood Vessels And Helps In The Fight Or Flight Reaction

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