synapse
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
The tiny gap between two nerve cells across which signals pass.
Usage notes
Chemical messengers called neurotransmitters are what actually cross the synapse to carry the signal on.
Test yourself
Which word fits the gap? "A signal crosses the _____ when the first neuron releases chemicals that the next one detects."
Answer: synapse
In your own words, what does "synapse" mean?
The tiny gap between two nerve cells across which signals pass.
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