ENDOCRINE CELLS FROM THE GASTROINTESTINAL- PANCREATIC ENDOCRINE SYSTEM IN THE GASTROINTESTINAL TRACT OF HUMAN EMBRYOS IN THE 5 TH - 6 TH GESTATION WEEK

The gastroinestinal - pancreatic endocrine system, being a part of the diffuse neuro - endocrine system contains diffusely scattered cells and cell groups in the covering epithelium and glands from the gastro-intestinal tract. Although there is still no digestion in those early stages of embryo development the endocrine cells are highly differentiated and show morphologic characteristics that are identical with the ones in adults. The aim of the current study is the making of an ultra-structural characteristic of the different types of endocrine cells in the mucosa of the gastrointestinal tract of human embryos in the 5 th -6 th gestation week. The ultra- structural description of the endocrine cells in the mucosa of the gastro-intestinal tract of human embryos is one of the directions in their study which is trying to uncover the fundamental question of their embryonic origin.