Development of the endocrine system alpha cells. The insulin concentration within the fetal pancreas is 3.6 pmol/g at seven to ten weeks, which rises to 30 pmol/g at 16–25 weeks of gestation. Near term, the insulin concentration increases to 93 pmol/g. The endocrine cells have dispersed throughout the body within 10 weeks. At 31 weeks of development, the islets of Langerhans have differentiated. While the fetal pancreas has functional beta cells by 14 to 24 weeks of gestation, the amount of insulin that is released into the bloodstream is relatively low. In a study of pregnant women carrying fetuses in the mid-gestation and near term
Wild Wind Islets are the short-tailed shearwater, (20,000 pairs), fairy prion (3000 pairs), common diving-petrel (3000 pairs) and silver gull. The white-bellied sea-eagle has nested there. The metallic skink is present. Wild Wind Islets The Wild Wind Islets comprise a group of five steep rocky unpopulated islets located close to the south-western coast of Tasmania, Australia. Situated some south of where the mouth of Port Davey meets the Southern Ocean, the islets are one of the eight islands that comprise the Mutton Bird Islands Group. The Wild Wind Islets are part of the Southwest National Park and the Tasmanian Wilderness World Heritage Site.