Which sequence shows the correct pathway of a nervous response to a stimulus during a reflex action?
stimulus→receptor→sensory neurone→relay neurone→motor neurone→effector→response\text{stimulus} \rightarrow \text{receptor} \rightarrow \text{sensory neurone} \rightarrow \text{relay neurone} \rightarrow \text{motor neurone} \rightarrow \text{effector} \rightarrow \text{response}stimulus→receptor→sensory neurone→relay neurone→motor neurone→effector→response
stimulus→receptor→motor neurone→relay neurone→sensory neurone→effector→response\text{stimulus} \rightarrow \text{receptor} \rightarrow \text{motor neurone} \rightarrow \text{relay neurone} \rightarrow \text{sensory neurone} \rightarrow \text{effector} \rightarrow \text{response}stimulus→receptor→motor neurone→relay neurone→sensory neurone→effector→response
receptor→stimulus→sensory neurone→relay neurone→motor neurone→response→effector\text{receptor} \rightarrow \text{stimulus} \rightarrow \text{sensory neurone} \rightarrow \text{relay neurone} \rightarrow \text{motor neurone} \rightarrow \text{response} \rightarrow \text{effector}receptor→stimulus→sensory neurone→relay neurone→motor neurone→response→effector
effector→motor neurone→relay neurone→sensory neurone→receptor→stimulus→response\text{effector} \rightarrow \text{motor neurone} \rightarrow \text{relay neurone} \rightarrow \text{sensory neurone} \rightarrow \text{receptor} \rightarrow \text{stimulus} \rightarrow \text{response}effector→motor neurone→relay neurone→sensory neurone→receptor→stimulus→response
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.