Insulin oscillation oscillations. The insulin oscillations are generated by pulsatile release of the hormone from the pancreas. Insulin originates from beta cells located in the islets of Langerhans. Since each islet contains up to 2000 beta cells and there are one million islets in the pancreas it is apparent that pulsatile secretion requires sophisticated synchronization both within and among the islets of Langerhans. Pulsatile insulin secretion from individual beta cells is driven by oscillation of the calcium concentration in the cells. In beta cells lacking contact, the periodicity of these oscillations is rather variable (2-10 min). However, within an islet of Langerhans
Ryan Langerhans Ryan Langerhans Ryan David Langerhans (born February 20, 1980) is an American former professional baseball outfielder. Langerhans was drafted in the third round of the 1998 Major League Baseball draft by the Atlanta Braves, and made his debut with them in 2002. He has also played in Major League Baseball for the Oakland Athletics, Washington Nationals, Seattle Mariners, Los Angeles Angels of Anaheim, and Toronto Blue Jays. Langerhans attended Round Rock High School in Round Rock, Texas. During the 1996 season, Langerhans batted .442 and was selected to the All-State team. His next season, 1997, Langerhans batted .427 and was