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3.1 Coordination and control – the nervous system

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Question 39
F

Some neurones have a fatty myelin sheath around the axon.

What is the function of the myelin sheath?

[1]
A

It releases chemicals that diffuse across the synapse.

B

It insulates the axon and speeds up the nerve impulse.

C

It detects a stimulus and starts the nerve impulse.

D

It stores the glucose that the neurone uses to respire.

Markscheme

3.1 Coordination and control – the nervous system Questions

  1. GCSE
  2. /Biology
  3. /3.1 Coordination and control – the nervous system

135 exam-style questions on OCR GCSE Biology 3.1 Coordination and control – the nervous system, covering 3.1.1 Structure of the nervous system, 3.1.2 Coordinated response, 3.1.3 The reflex arc, 3.1.4 Structure of the eye, 3.1.5 Defects of the eye, 3.1.6 Structure and function of the brain, 3.1.7 Difficulties of investigating brain function, and 3.1.8 Limitations in treating nervous system damage. Each one has a worked solution and a mark scheme showing where the marks go.

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