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 of the 11th inning. This was his first career game-winning homer. On August 25, 2009, Langerhans hit another game-winning home run against the Oakland Athletics off Craig Breslow on a two-ball two-strike pitch with one out and one runner on with the score tied 2-2 in the bottom of the tenth. Langerhans and his wife, Shari, live in Round Rock, Texas, where he also graduated from high school. In high school Langerhans improved his baseball skills and participated in cross country. Langerhans won a Class 5A state championship with the Round Rock High School Dragons in 1997. The Dragons were