28/01/2026
Inside the Brain & Spine – most people will have burnt their hand at some point or another. It may have just been for a split-second but it hurts! That lightning-fast, pull your hand back, happens without thought. That action is called a reflex arc – a rapid, involuntary reaction to a stimulus that is mediated by the spinal cord. The brain receives the signal a little bit later and that is when the pain really kicks in. The key functions of the reflex are to keep you protected from injury and maintain internal homeostatic balance.