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2.3 The nervous system and brain

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Question 5

A patient has an infection in the brain. An antibiotic given to the patient enters the bloodstream.

Why may the infection remain difficult to treat?

[1]
A

The skull may prevent the antibiotic reaching the brain through the blood

B

The meninges may prevent the antibiotic leaving the brain capillaries

C

The antibiotic may collect only in the most active brain regions

D

The blood brain barrier may prevent enough antibiotic reaching the infection

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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