How is a nerve impulse transmitted across a synapse?
Synapses are a gap or a junction between two neurones. When a nerve impulse is travelling along the axon of the first neurone and the impulse reaches the axon terminal (the end of the axon), a chemical called neurotransmitter is released from the axons terminal that diffuses across the synapse and binds to the receptors found on the second neurone's head.
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