A '''reflex''' [[action]], also known as a reflex, is an involuntary and nearly [[instantaneous]] movement in [[response]] to a [[stimulus]]. In most [[contexts]], in particular those involving [[humans]], reflex [[actions]] are mediated via the reflex arc; this is not always true in other [[animals]], nor does it apply to casual uses of the term 'reflex'. | A '''reflex''' [[action]], also known as a reflex, is an involuntary and nearly [[instantaneous]] movement in [[response]] to a [[stimulus]]. In most [[contexts]], in particular those involving [[humans]], reflex [[actions]] are mediated via the reflex arc; this is not always true in other [[animals]], nor does it apply to casual uses of the term 'reflex'. |