Illustration of an islet of Langerhans,a group of specialised cells that forms the endocrine component of the human pancreas. About one million islets are scattered throughout the pancreas. Some 3,000 cells in each islet secrete a variety of hormones. The most numerous are the insulin- producing (beta) cells (with blue cytoplasmic bodies) which secrete the hormone directly into the bloodstream. Insulin's main role is in controlling the transport of glucose; insulin deficiency results in diabetes. Other hormones secreted by other cells in the islet include glucagon,pancreatic polypeptide,and somatostatin | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Bavosi, John |
Taille de l’image : | 2480 px × 3615 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |