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.
Detroit Metro, the shorthand for this major regional transportation nexus, is one of the nation's largest airports. It has six runways, two major terminals with attached parking structures and 145 gates, and it provides transportation to 160 domestic and international destinations.