communication 0.0 / 5 ? BiologyCommunication, homeostasis and energyA2/A-levelOCR Created by: dragonfruitjamCreated on: 26-10-15 12:45 neurotransmitters chemicals that diffuse across the cleft to transmit a signal to the post synaptic neurone 1 of 8 cholinergic synapse those that use acetylcholine as a transmission substance 2 of 8 synaptic knob a swelling at the end of the pre-synaptic neurone 3 of 8 acetylcholineterase an enzyme in the cleft that breaks down acetyl choline to ethanoic acid and choline 4 of 8 resting potential the voltage across the neuron membrane when it is resting (-60mV compared to outside) 5 of 8 voltage gated channels channels in the membrane that allows ions to pass,they have a gate mechanism and respond to change in voltage across the membrane 6 of 8 threshold potential -50mV if the depolarization doesn't reach this level, no AP will be created 7 of 8 action potential +40mV it is transmitted across the axon or dendron of the plasma membrane 8 of 8
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