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Reflex arcs are evolved in animals for quick and efficient responses. Which one of the following sequences correctly represents a reflex arc?

General Knowledge 2023 CDS General Knowledge 2023 CDS 2023

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Receptor—Sensory neuron—Relay neuron in spinal cord—Brain—Motor neuron—Effector

Receptor—Sensory neuron—Brain—Relay neuron in spinal cord—Motor neuron—Effector

Receptor—Motor neuron—Relay neuron in spinal cord—Sensory neuron—Effector

Receptor—Motor neuron—Brain—Sensory neuron—Effector