Why are reflex actions important?
They involve the conscious part of the brain, so the response is very accurate
They are automatic and rapid, so they help to protect the body from harm
They use hormones carried in the blood, so the response lasts a long time
They are slow and controlled, so the body uses less energy when responding
40 exam-style questions on AQA GCSE Biology 5.2 The human nervous system, covering 5.2.1 Structure and function, 5.2.2 The brain, 5.2.3 The eye, and 5.2.4 Control of body temperature. Each one has a worked solution and a mark scheme showing where the marks go.