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.
The response initiated by the effector organ is known as a reflex action. This is what most people refer to as reflexes. Visceral reflexes (also known as autonomic reflexes) refer to reflexes such as those which affect the gland secretion or smooth muscle of the cardiac system to contract. reflex arc is in fact the simplest and most primitive nerve pathway in the human body. A reflex arc is designed to administer unconscious automatic actions which are determined to be protective in nature to keep a body in homeostasis.