1 The pancreas is an abdominal gland situated behind the stomach in the upper abdomen.  The main function of the pancreas is to secrete hormones and enzymes that help with digestion and regulate blood sugar (glucose) metabolism.
See also: List of tram and light rail transit systems. The Shanghai Metro is the longest metro system by route length. The Beijing Subway is the metro system with the highest ridership. The New York City Subway has the most stations.
Bicycle Transit Systems is based in Philadelphia, PA. We aim to be the world leader in bike share system implementation and operation. Before forming our own company, our founders launched and expanded the earliest and largest bike share programs in the US.