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
Islets of Granada Islets of Granada The islets of Granada (Spanish: "Isletas de Granada") are located in Lake Nicaragua, just southeast of the city of Granada in Nicaragua. The islets are a group of 365 small islands scattered about the Asese peninsula. The islets are of volcanic origin, they were formed when the Mombacho volcano blew much of its cone into the lake thousands of years ago, thereby creating the archipelago. Most of the islets are covered with vegetation and rich with bird life. Many of the islets are occupied. Some are privately owned and hold homes or vacation houses. There are facilities