IB Biology C2.2.4 Variation in impulse speed
IB Biology C2.2.4 Variation in impulse speed
Practise explaining why impulse speed varies with myelin, nodes of Ranvier and axon diameter, including graph and data questions.
How this is tested
- explain how myelin and nodes of Ranvier increase speed by saltatory conduction
- interpret diagrams to compare conduction speed in axons with different structure
- calculate relative conduction speeds and link faster transmission to larger diameter