1. in man, the part of the body from the neck to the bottom of the spine. 2. in animals, the upper part of the body. of or at the back. the back door. 1. to, or at, the place or person from which a person or thing came.
secrete definition: Secrete is defined as to hide, or to produce and release a liquid. (verb) An example of secrete is to put the house key in a secret location. An example of secrete is for the body to produce sweat. ...
Secretin: A peptide hormone, that calls for the secretion of pancreatic juices. Produced in the S-cells in the duodenum and secreted into the blood stream. The release of secretin is triggered by the lowering of pH in the duodenum.roduced in G-cells in the gastric pits of the stomach lining and secreted into the blood stream. The release of gastrin is triggered by the presence of food in the stomach lumen especially protein.