Example: Your hand touches a Hot Pan. What happens in terms of the Reflex Actions.

The Skin Receptor sees that Change in the Environment [Stimulus] and sends the Information along a Sensory Neuron The Message is reached to the Outskirts of the CNS, where a Relay Neuron grabs hold of it The Relay Neuron gives it to the Motor Neuron, which delievers it to an appropriate muscle, for it to Contract in this case, because its not really a good thing