NERVE IMPULSE, DRAWING Transmission of nerve impulses. Illustration showing the transmission of nerve impulses in the brain from one neuron to another. Close-up on a synapse transmitting from neuron A (yellow) to a dendritic spine on neuron B (orange). Vesicles liberate neurotransmitters (yellow spheres) which attach themselves to receptors (pink). There is an exchange of positive and negative charges between the interior and the exterior of the axon, creating a mobile electric current (action potential).
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