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
Islets of Granada for the residents and for tourists. Hotels and shops are established on some of the islets, and boating tours are available. The fort of San Pablo is located on the islets in Lake Nicaragua. The fort of San Pablo was built in order to protect the city of Granada from Pirates in the 18th century. The San Pablo Fort on the Islets has witnessed the battles and conflicts endured during the Colonial Period. Many residents of the islands were forced to relocate to the mainland in the 1990s after having lived there for several generations. During Somoza's dictatorship, members of