What is reflex action?

Reflex action is an involuntary and automatic response to a stimulus that occurs without conscious thought. It is a rapid and predictable response that helps protect the body from harm or danger. Reflex actions are controlled by the spinal cord and do not involve the brain in the decision-making process. Examples of reflex actions include blinking when something comes close to the eye, pulling your hand away from a hot surface, or sneezing when something irritates the nasal passages.