Pancreatic islets by scarce alpha, delta and PP cells in the periphery, human islets display alpha and beta cells in close relationship with each other throughout the cluster. Islets can influence each other through paracrine and autocrine communication, and beta cells are coupled electrically to six to seven other beta cells (but not to other cell types). The paracrine feedback system of the pancreatic islets has the following structure: A large number of G protein-coupled receptors (GPCRs) regulate the secretion of insulin, glucagon and somatostatin from pancreatic islets, and some of these GPCRs are the targets of drugs used to treat type-2
Islets and skerries in the Faroes to the fact that Sumbiarsteinur is lying to itself, while the other skerries are close together. This group of skerries are called Flesjarnar. Munkurin is the southernmost point of the Faroes at 61° 10' 30".85 N, 6° 40' 23".77 W. Flesjarnar can be seen from Sumba, Akraberg and from Eggjarnar and other high places in Suðuroy. 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