A person accidentally touches a hot plate. The person's hand moves away from the plate before they feel any pain.
This is a reflex action.
Name the effector in this reflex action.
Describe the pathway taken by the nerve impulse in this reflex action, from the stimulus to the response.
Explain why this response is faster than a response that the person decides to make.
Explain why it is important that this response is a reflex.
43 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.