A person withdraws a foot from a sharp object before becoming aware of pain.
Which statement explains this response?
the brain coordinates the reflex before the sensory receptor detects the stimulus
the muscle coordinates the reflex before impulses enter the motor neurone
the spinal cord coordinates the reflex before conscious awareness in the brain
the sensory receptor coordinates the reflex before impulses enter the spinal cord
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.