Bill Dyche May 1, 2011Anatomy word of the month: pylorus The “gatekeeper” in Greek. This ring of muscle tissue surrounds the juncture between the stomach and the first part of the small intestine, the duodenum. It functions as a gatekeeper by preventing food from exiting the stomach until it has reached a thick, soup-like consistency. Stomach contents called chyme, “juice” in Greek, then is squirted into the small intestine for further digestive activity. Opening and closing the pyloris is controlled by a variety of influences including nerves to the stomach, the vagus nerves.Strange words are found in familiar places. The massive support structures found at the entry, gateway, to a bridge are called “pylons”. Leave a Reply Cancel replyYou must be logged in to post a comment.