Its most prominent occurrence is in the Christian Bible at Matthew 5:18 : For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled (KJV). The quotation uses them as an example of extremely minor details.
Millions of cells form tissues and organs that all talk to each other via messages sent throughout the body. One type of messenger in the body are hormones. Hormones are chemical substances that travel through the blood and throughout the body to control bodily functions. One very important hormone is secretin. Secretin is a hormone that controls parts of the digestive system and maintains water balance in the body. It's released by the duodenum, the upper part of the small intestine. Let's explore the functions of secretin in closer detail.
The hormones gastrin, cholecystokinin, and secretin are secreted by organs of the digestive system in response to the presence of food and change the function of the stomach, gallbladder, and pancreas. Our pancreas produces the hormones insulin and glucagon to affect the behavior of cells throughout the body.1  Gastrin is a hormone produced by the walls of the stomach in response to the filling of the stomach with food.he pancreas stores the pancreatic juice produced by its own exocrine glands so that it is prepared to digest foods at all times. Secretion. The stomach, gallbladder, and pancreas all share the common function of secretion of substances from exocrine glands.