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 and skerries in the Faroes Islets and skerries in the Faroes Besides the 18 islands of the Faroes there are also several islets and skerries. The Faroe Islands consist of 779 islands, islets and skerries. The islets are small and are geographical parts of the larger islands. Suðuroy consists of 263 islands, islets and skerries, which is the largest number. The islets are measured in square hectometers (hectares), the largest being comparable in size to the smallest island, Lítla Dímun. Here is a list of the largest islets: 1. Tindhólmur (65,0 sqhm), at Sørvágur Vágar 2. Mykineshólmur (45,0 sqhm), at Mykines 3. Trøllhøvdi (19,0 sqhm),