Describe how information passes from a relay neurone to a motor neurone. (3 marks)
An impulse stimulates the active release of a neurotransmitter from the relay neurone into the synapse. The neurotransmitter carrying the information from the relay neurone diffuses down the concentration gradient, across the synapse. The neurotransmitter then attaches to the motor neurone, resulting in the causation of an impulse.
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