Secretion is the physiological process of formation and release of various types of substances from body cells. It can be mistakenly confused with excretion, which differs in that excretory secretions are formed and removed from the body through special organs.
There are many secretory processes in the body. - The secretions of the digestive glands are released. Mucus is secreted, which is necessary for the movement of food through the esophagus. Gastric juice, necessary for the digestion of food, is secreted by the glands of the stomach into the cavity, therefore it is usually classified as secretions, in contrast to pancreatic juice, which may contain substances with a large molecular weight that are insoluble in water - bile. Intestinal juice with solid food debris is removed, the reagents necessary