AP BIOLOGY

Detailed explanation-1: -A reflex is a rapid, unlearned, involuntary (automatic) response to a stimulus (change in the environment). Reflexes are responses that protect the body from potentially harmful events that require immediate action. They involve relatively few neurons (nerve cells) so that they can occur rapidly.

Detailed explanation-2: -Reflex activity Inborn reflexes are rapid, predictable motor responses to stimuli. They are unconscious, unlearned, and involuntary.

Detailed explanation-3: -A reflex is an involuntary (say: in-VAHL-un-ter-ee), or automatic, action that your body does in response to something-without you even having to think about it.

Detailed explanation-4: -A reflex action is an automatic (involuntary) and rapid response to a stimulus, which minimises any damage to the body from potentially harmful conditions, such as touching something hot. Reflex actions are therefore essential to the survival of many organisms.

Detailed explanation-5: -An absent reflex response is also called areflexia. A reflex is an involuntary (automatic) action your body does in response to something. Reflexes protect your body from things that can harm it.