Synapses 0.0 / 5 ? BiologyHuman, animal and plant physiologyA2/A-levelCCEA Created by: JcatCreated on: 12-04-19 12:06 52431 Across 1. Blocks calcium channels in presynaptic neurone, less transmitter is released and an action potential is less likely. (6) 4. Blocks receptors, prevents synaptic transmission. Loss of muscle function (6) 5. Released at inhibitory synapses, causing negative ions to flow into post synaptic neurones - causes hyperpolarisation (4) Down 2. Primary transmitter substance in central nervous system (13) 3. Stimulates release of acetylcholine and other neurotransmitters making an action potential more likely (8)
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