Final answer:
The correct sequence of events in a polysynaptic reflex response is: receptors, afferent neuron, interneuron, efferent neuron, effector.
Step-by-step explanation:
The correct sequence of events in a polysynaptic reflex response is: receptors, afferent neuron, interneuron, efferent neuron, effector.
In a polysynaptic reflex, sensory receptors detect a stimulus, and the information is then transmitted as a nerve impulse along the afferent neuron to the spinal cord.
From the spinal cord, the nerve impulse passes to an interneuron, which integrates the information.
The interneuron then sends the impulse to an efferent neuron, which carries the impulse away from the spinal cord to the effector, such as a muscle or gland, causing a response.