Useless fact
What is the scientific name for goosebumps?
The scientific term for the involuntary reflex that causes goosebumps is piloerection.
The term piloerection comes from the Latin word pilus, meaning hair, and the action of erection. This physiological phenomenon occurs when tiny muscles at the base of each hair follicle, known as arrector pili muscles, contract and pull the hair straight up. This reflex is inherited from our evolutionary ancestors, who had thick coats of body hair. In animals, piloerection serves two main functions: it traps a layer of air close to the skin to provide insulation against the cold, and it makes the animal appear larger and more intimidating to potential predators when threatened. Although humans no longer have enough body hair for piloerection to provide effective warmth or defense, the vestigial reflex persists and is triggered by the sympathetic nervous system. This system automatically responds not only to low temperatures but also to intense emotional states such as fear, awe, excitement, or listening to particularly moving music, which is why we still get goosebumps today.
Why this is true — Piloerection is the standard medical and physiological term for the contraction of arrector pili muscles that causes hair to stand on end, commonly known as goosebumps.
Sources
- Piloerection Definition & Meaning Dictionary.com