The anatomy of the endocrine pancreas among teleosts : phylogenetic implications
Résumé
In vertebrates, the regulation of glycemia (glucose level in the blood) is mainly controlled by hormones from the endocrine part of the pancreas: insulin and glucagon. Anatomically, the endocrine cells of the pancreas form minute islets, called the islets of Langerhans, that are scahered in the other pancreas tissues. Generally, these tissues diffuse between the mesenteries and the coils of the intestine. However, according to the literature, some teleostean species display a more or less compact endocrine pancreas, with a giant or principal islet, named Brockmann Body (BB) (Figs 1 to 4). The objective of this study is to examine the anatomical diversity of this organ in the Actinopterygii in a phylogenetic context.
Domaines
Sciences du Vivant [q-bio]
Origine : Fichiers produits par l'(les) auteur(s)
