Pancreatic islets Pancreatic islets The pancreatic islets or islets of Langerhans are the regions of the pancreas that contain its endocrine (hormone-producing) cells, discovered in 1869 by German pathological anatomist Paul Langerhans. The pancreatic islets constitute 1 to 2% of the pancreas volume and receive 10–15% of its blood flow. The pancreatic islets are arranged in density routes throughout the human pancreas, and are important in the metabolism of glucose. There are about 3 million islets distributed in the form of "density routes" throughout the pancreas of a healthy adult human, each of which measures an average of about 0.1 mm (109
Ryan Langerhans again selected to the All-State team. That season, Langerhans also won 11 games as a pitcher. During his senior season in 1998, Langerhans batted .512, was named to the All-State team, was selected as a Nike All-American, was selected to play in the 1998 Texas High School All-Star Game, and was named Texas Player of the Year. Langerhans is one of five players who attended Round Rock High School and have played in the major leagues. The four other players are John Danks, Brian Gordon, Jordan Danks and Travis Schlichting. Ryan Langerhans's father, John Langerhans, was his coach while playing