The diagram shows a neurone - Edexcel - GCSE Biology - Question 3 - 2016 - Paper 1
Question 3
The diagram shows a neurone.
(a) (i) Name the parts labelled A and B.
(ii) Describe the role of B.
(b) Signals travel along the axon.
How do these signals travel?... show full transcript
Worked Solution & Example Answer:The diagram shows a neurone - Edexcel - GCSE Biology - Question 3 - 2016 - Paper 1
Step 1
Name the parts labelled A and B.
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Answer
A: nucleus (or cell body)
B: myelin (sheath)
Step 2
Describe the role of B.
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Answer
The role of B, the myelin sheath, is to provide insulation for the axon. This insulation is crucial as it helps increase the speed of the electrical impulse that travels along the axon, allowing for faster signal transmission.
Step 3
How do these signals travel?
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