Question

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what are synapses?

chemicals produced by the brain.

the electrical charge of a neuron.

the liquid surrounding the brain and spinal cord.

junctions between neurons.

tiny blood vessels in the brain.

Explanation:

Synapses are the junctions between neurons where nerve - impulses are transmitted from one neuron to another. They are not chemicals, electrical charges, surrounding liquids, or blood vessels.

Answer:

Junctions between neurons.