Final answer:
The reflex pathway for pulling your hand away fast when touching something extremely hot involves sensory neurons, the central nervous system, and motor response to the skeletal muscles.
Step-by-step explanation:
When you touch something extremely hot and burn your fingers, the reflex pathway for pulling your hand away fast involves sensory neurons, the central nervous system, and motor response to the skeletal muscles. In this reflex, sensory neurons are activated by the stimulus of high temperature in the skin. The sensory information is then sent to the central nervous system, which processes the information and sends a motor response to the skeletal muscles that control the movement of pulling the hand away.