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.
The NY subway system is one of the busiest mass transit systems in the world, servicing over four million riders everyday. Featuring 24 lines, 468 stations, and more than 800 total miles of track, the NY subway system is the cheapest and most convenient way for NYC tourists to explore New York.