What is the difference between reflex action and reflex arc?
the involuntary functioning or movement of any organ or body part in response to a particular stimulus which occurs in very short duration of time(within a second usually) and does not involve will or any thinking of brain is called reflex action.
reflex arc is the path followed by nerve impulses to produce the reflex action. It usually includes receptor organ, afferent nerve, nerve center, efferent nerve, effector organ or a muscle