Secretion of - education and the provision of specific product (secret) cells of any cancer. The secretion is external and internal. External secretion is secretions on the surface of the body, hollow organs or body cavity; internal secretion - receipt of secret in the blood and lymph. The secret of any cancer consists of water and dissolved organic and inorganic crystalloids and colloid substances. Water and chemicals, of which the glands produce the secret comes from the blood. Part of the secret may include hormones (see), enzymes (see), alkalis, acids and chemicals.
The secretion is continuous, not having special neurohumoral regulation mechanisms, and intermittent, carried out with the help of these kinds of regulation. As an example glands secreting continuously, can lead glands secreting gastric mucus, and an example glands secreting intermittently and exposed nerve and humoral regulation,- the main and obkladochnykh cells glands bottom of the body of the stomach, pancreas. The secretion of salivary glands is regulated mainly by the nervous mechanisms.
The nervous mechanism secretion provides the autonomic nervous system (see), humoral - specific hormones and chemicals. Hormones, products of secretion of glands of internal secretion, are the regulators of the functions of the various bodies including the secretory function of certain glands. For example, the hormone gastrin is formed in the mucosa of the pyloric portion of the stomach and in doing in the blood, causing the secretion of gastric fundus. Similar regulatory effects of one gland function other exist between the glands of internal secretion. So, for example, on the secretion of insulin, a hormone islets of the pancreas, influenced pancreatomy the pituitary hormone. In case of full denervation cancer comes paralytic secretion, characterized by a continuous branch secret (from the salivary glands within 5-6 weeks after denervation, intestinal glands - 24-28 hours.