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2.3 The nervous system and brain

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Question 7
F

A person touches a sharp object and rapidly withdraws a hand.

Which sequence shows the path of impulses in this reflex arc?

[1]
A

motor neurone →\rightarrow→ relay neurone →\rightarrow→ sensory neurone

B

relay neurone →\rightarrow→ sensory neurone →\rightarrow→ motor neurone

C

sensory neurone →\rightarrow→ motor neurone →\rightarrow→ relay neurone

D

sensory neurone →\rightarrow→ relay neurone →\rightarrow→ motor neurone

Markscheme

2.3 The nervous system and brain Questions

  1. GCSE
  2. /Biology
  3. /2.3 The nervous system and brain

43 exam-style questions on Edexcel GCSE Biology 2.3 The nervous system and brain, covering 2.3.1 Structures and functions of the brain, 2.3.2 Imaging brain function with scanning, 2.3.3 Limitations in treating nervous system damage, 2.3.4 Neurones and impulse transmission, and 2.3.5 Structure and function of a reflex arc. Each one has a worked solution and a mark scheme showing where the marks go.

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