What are reflex actions? Give two examples. Explain a reflex arc.
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Reflex arcs
The nerve pathway followed by a reflex action is called a reflex arc . For example, a simple reflex arc happens if we accidentally touch something hot. Receptor in the skin detects a stimulus (the change in temperature).
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Reflex action is defined as an unconscious and involuntary response of effectors to a stimulus. Example, on touching a hot object (stimulus), we immediately remove our hand from it. Other example from daily life are watering of mouth on seeing food, sneezing, blinking of eyes and yawning.
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