Answer: Motor neuron effector
If you accidentally touch hot surface, you automatically pull your hand away from the object and this response is governed by a simple combination of neurons called reflex arcs. The sensory neurons carriers the impulse towards the central nervous system (CNS) then the interneuron carries these impulses within the CNS, while the motor neuron carries impulse away from CNS. Therefore, motor neuron is the last structure to respond to a reflex.