GCSE Biology Specification

OCR A J247

Section B3.1: Coordination and control – the nervous system

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#B3.1a

describe the structure of the nervous system

Central Nervous System, sensory and motor neurones and sensory receptors

#B3.1b

explain how the components of the nervous system can produce a coordinated response

it goes to all parts of the body, has many links, has different sensory receptors and is able to coordinate responses

#B3.1c

explain how the structure of a reflex arc is related to its function

#B3.1d

explain how the main structures of the eye are related to their functions

cornea, iris, pupil, lens, retina, optic nerve, ciliary body, suspensory ligaments

#B3.1e

describe common defects of the eye and explain how some of these problems may be overcome

colour blindness, short-sightedness and long-sightedness

#B3.1f

describe the structure and function of the brain

cerebrum, cerebellum, medulla, hypothalamus, pituitary

#B3.1g

explain some of the difficulties of investigating brain function

the difficulty in obtaining and interpreting case studies and the consideration of ethical issues

#B3.1h

explain some of the limitations in treating damage and disease in the brain and other parts of the nervous system

limited ability to repair nervous tissue, irreversible damage to the surrounding tissues, difficulties with accessing parts of the nervous system