Define reflex action mentioned in Class 11 neural control and coordination?
A reflex action refers to the complete process of responding to peripheral nerve stimulation that occurs involuntarily and requires the involvement of a component of the central nervous system. The afferent neuron gets a signal from a sensory organ and sends the impulse into the CNS through a dorsal nerve root (at the level of the spinal cord). After that, the efferent neuron sends signals from the CNS to the effector.