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Sunil unconsciously touched the hot iron rod and immediately withdrew his hand. Which type of action is involved ? Also define this action. Draw a flow chart to show the path followed for this action.
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• Reflex action (½ Mark)
• An automatic and quick response to a stimulus which does not involve thinking. (½ Mark)
• Stimulus $\rightarrow$ Receptor $\rightarrow$ sensory neuron $\rightarrow$ relay neuron (spinal cord) $\rightarrow$ Motor neuron $\rightarrow$ effector (muscle) response. (1 Mark)
• An automatic and quick response to a stimulus which does not involve thinking. (½ Mark)
• Stimulus $\rightarrow$ Receptor $\rightarrow$ sensory neuron $\rightarrow$ relay neuron (spinal cord) $\rightarrow$ Motor neuron $\rightarrow$ effector (muscle) response. (1 Mark)