natremia The presence of sodium ions in the blood. Derived terms . dysnatremia; hypernatremia; hyponatremia; natremic; Translations
A reflex arc is a nerve pathway in the body of humans and some animals that connects certain muscle groups to others, without involving the brain. These sorts of pathways primarily control involuntary movements in response to some sort of stimulus.
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. ex-. Reflex actions are sudden responses, which do not involve any thinking.EFLEX ACTION. 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. ex-.