A sudden,quick and immediate respons of the body to a stimulieg . knee jerk
The immediate responce to stimulus.it means when we touch a unknown object i.e like hot pan we move our hand suddenly in this situation the message goes to spainal chord and first responds it .the only function of brain in reflex action is to identify how this happens
Reflex actions are sudden, involuntary reactions of the body in response to stimuli. They occur without the involvement of the conscious areas of the brain. Therefore, all reflex actions are unconscious actions. Somatic nervous system is responsible for reflex arcs.\xa0Reflex arc\xa0is the path of impulses in the reflex action.Reflex actions occur both from the brain and spinal cord which are the parts of the central nervous system. Most often these actions are mainly formed from the spinal cord. When sudden responses are required, instructions are given by the spinal cord itself. Impulses reach the brain only after that. Later conscious responses are made.\xa0