what is reflex action class 10

Reflex action is an automatic, rapid, spontaneous protective quick response or reaction to a stimulus without being under control. It is an involuntary and sudden response to stimuli that helps organisms to quickly adapt to an adverse circumstance that could have the potential to cause bodily harm. Reflex arcs are formed in the nervous system and involve the connection of detecting the signal from the nerves (input) and responding to it quickly (output) . Reflex arcs are made up of three types of neurons: sensory neurons, motor neurons, and relay neurons. The sensory neurons detect the stimulus and send a message to the relay neuron, which then sends a message to the motor neuron. The motor neuron then sends a message to the effector, which is the muscle or gland that produces the response. Reflex action is an important part of ensuring the survival of organisms as it has enabled quick reactions to certain situations where an organism’s life could be at stake.