Which one of the following depicts the correct circuit of a reflex are?

A reflex arc is a specialized neural pathway that allows for rapid, involuntary responses to stimuli. The circuit begins with a receptor that detects a stimulus and converts it into an electrical impulse. This impulse is carried by a sensory (afferent) neuron to the integration center, which is typically the spinal cord [2]. In the spinal cord, the signal is processed—often involving an interneuron—and then transmitted to a motor (efferent) neuron. Finally, the motor neuron carries the impulse to an effector, such as a muscle or gland, which executes the response [2]. While information eventually reaches the brain, the reflex arc itself is formed in the spinal cord to ensure a faster response by bypassing the slower thinking processes of the brain [2]. Therefore, the correct sequence is Receptor-sensory neuron-spinal cord-motor neuron-effector.

Sources

1. [1] https://www.sciencedirect.com/topics/neuroscience/reflex-arc
2. [2] https://en.wikipedia.org/wiki/Reflex_arc
3. [3] Science , class X (NCERT 2025 ed.) > Chapter 6: Control and Coordination > 6.1.1 What happens in Reflex Actions? > p. 102