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3.1 Coordination and control – the nervous system

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Question 35

A patient shifts their focus from reading a digital tablet at 30 cm to looking at a mountain range on the horizon. Which row in the table correctly describes the physiological changes that occur in the patient's eyes to focus on the distant mountain range?

Ciliary musclesSuspensory ligamentsCurvature of the lens
AContractSlackenDecreases
BRelaxSlackenIncreases
CRelaxTightenDecreases
DContractTightenIncreases
A

Contract ∣\lvert∣ Slacken ∣\lvert∣ Decreases

B

Relax ∣\lvert∣ Slacken ∣\lvert∣ Increases

C

Relax ∣\lvert∣ Tighten ∣\lvert∣ Decreases

D

Contract ∣\lvert∣ Tighten ∣\lvert∣ Increases

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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