IB Biology Topic C2.2: Neural Signalling Notes

C2.2.1 Neurons as cells within the nervous system that carry electrical impulses

4 minute read

C2.2.2 Generation of the resting potential by pumping

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C2.2.3 Nerve impulses as action potentials that are propagated along nerve fibres

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C2.2.4 Variation in the speed of nerve impulses

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C2.2.5 Synapses as junctions between neurons and between neurons and effector cells

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C2.2.6 Release of neurotransmitters from a presynaptic membrane

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C2.2.7 Generation of an excitatory postsynaptic potential

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C2.2.8 Depolarization and repolarization during action potentials (HL)

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C2.2.9 Propagation of an action potential along a nerve fibre/axon (HL)

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C2.2.10 Oscilloscope traces showing resting potentials and action potentials (HL)

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C2.2.11 Saltatory conduction in myelinated fibres to achieve faster impulses (HL)

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C2.2.12 Effects of exogenous chemicals on synaptic transmission (HL)

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C2.2.13 Inhibitory neurotransmitters and generation of inhibitory postsynaptic potentials (HL)

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C2.2.14 Summation of the effects of excitatory and inhibitory neurotransmitters (HL)

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C2.2.15 Perception of pain by neurons with free nerve endings in the skin (HL)

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C2.2.16 Consciousness (HL)

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