Edexcel A-Level Biology A2 8.5 Saltatory Conduction Questions

Explain how myelin insulates axons so impulses jump between nodes of Ranvier, compare myelinated and non-myelinated fibres, and apply speed evidence to demyelinating disease.

Exam points

explain why myelin insulation makes impulses jump between nodes of Ranvier
compare myelinated and non-myelinated neurones using speed tables or graphs

[Maximum number: 1]

Many predatory animals produce toxins to disable their prey. Some of these toxins inhibit nervous communication.

Nerve impulses are transmitted along axons. Some axons are myelinated.

Which row correctly compares the conduction of an impulse along a myelinated neurone with conduction along a non-myelinated neurone?
□ A
□ B

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Edexcel A-Level Biology A2 8.5 Saltatory Conduction Questions question 1