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Topic 24Biology

C2.2 Neural signalling

Resting and action potentials in neurons, propagation along myelinated axons, chemical synaptic transmission, and (HL) neural integration at the axon hillock plus pharmacology of drugs and neurotoxins.

Practice questions
1

Resting and action potentialsSign up

Resting potential (−70 mV) and Na⁺/K⁺ pump · Action potential cycle and saltatory conduction

30 min
2

Chemical synapses and neurotransmissionSign up

Five-step synaptic transmission · EPSP vs IPSP and NT removal

30 min
3

Neural integration and drug effects (AHL)HLSign up

Spatial and temporal summation at the axon hillock · Agonists, antagonists, AChE inhibitors, reuptake inhibitors

30 min

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C2.1 Chemical signalling

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C3.1 Integration of body systems