An eye shifts its focus from reading a book close up to looking at a distant mountain.
Which row correctly describes the changes that occur in the suspensory ligaments and the lens during this switch?
Suspensory ligaments: slack to tight; Lens: thinner
Suspensory ligaments: slack to tight; Lens: thicker
Suspensory ligaments: tight to slack; Lens: thinner
Suspensory ligaments: tight to slack; Lens: thicker
39 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.