Dopamine Synapse

Synaptic Cleft. At The Level Of The Synaptic Cleft, The Transmission Of The Nerve Impulse Is Made Thanks To A Neurotransmitter In Green ; Released By The Exocytosis Of The Synaptic Vesicles Of The Upstream Neuron ; Example Dopamine That Links To A Receptor Located In The Membrane Of The Downstream Neuron In Purple ; Example Dopaminergic Receptor. When It Becomes Fixed To The Receptor, The Neurotransmitter In Green Enables The Transmission Of The Nerve Impulse. An Antagonist In Blue, By Fixing To The Same Bonding Site That The Neurtransmitter Blocks The Receptor ; The Nerve Impulse Is Not Transmitted. It Can Be A Competitive Antagonist Reversible Fixation Or An Irreversible Antagonist Irreversible Fixation To The Receptor Site, By A Covalent Bonding. (Photo By BSIP/UIG Via Getty Images)