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
Ryan Langerhans coached by his father John, a former standout baseball player for the University of Texas, where Ryan was signed to play before signing a professional contract. Ryan hit a tournament-record three triples in the state tournament semi-final against Corpus Christi Moody before earning the win as the pitcher in the championship game against traditional Texas powerhouse Lubbock Monterey, who was coached by Bobby Moegle, the winningest coach in United States high school baseball history. Ryan Langerhans Ryan David Langerhans (born February 20, 1980) is an American former professional baseball outfielder. Langerhans was drafted in the third round of the 1998