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2.3 The nervous system and brain

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Question 6

During brain surgery, a surgeon applies a small electrical stimulus to two regions, P and Q. Stimulating region P changes the patient's breathing rate. Stimulating region Q makes a previously smooth hand movement poorly coordinated.

The surgeon is investigating the medulla oblongata, the cerebellum and the cerebral hemispheres.

Which combination best explains these observations?

[1]
A

region P is the cerebral hemispheres; region Q is the medulla oblongata

B

region P is the cerebellum; region Q is the cerebral hemispheres

C

region P is the medulla oblongata; region Q is the cerebellum

D

region P is the medulla oblongata; region Q is the cerebral hemispheres

Markscheme

2.3 The nervous system and brain Questions

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

111 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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