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Although it is primarily an exocrine gland, secreting a variety of digestive enzymes, the pancreas also has endocrine cells. Its pancreatic islets —clusters of cells formerly known as the islets of Langerhans—secrete the hormones glucagon, insulin, somatostatin, and pancreatic polypeptide (PP).
Pancreatic islets are characterized by rich innervation and vascularization, although there are notable differences between rodent and human islets.
Pancreatic islets or islets of Langerhans: The islets of Langerhans are the regions of the pancreas that contain its endocrine (hormone-producing) cells. The pancreatic islets are small islands of cells that produce hormones that regulate blood glucose levels.
19 Σεπ 2023 · The endocrine function of the pancreas is carried out by the pancreatic islets of Langerhans. These endocrine glands secrete hormones directly into the bloodstream and consist of three main cell types ( alpha , beta , and delta ) which.
30 Οκτ 2023 · The endocrine component is a much smaller, but equally important, portion of the pancreas. It is composed of pancreatic islets, which appear as islands of cells dispersed between the pancreatic acini. These islet cells produce and secrete hormones that regulate glucose, lipid and protein metabolism.
The tissues with an endocrine role can be seen under staining as lightly-stained clusters of cells, called pancreatic islets (islets of Langerhans). Darker-staining cells form clusters called acini, which are arranged in lobes separated by a thin fibrous barrier.
Even though the islet cells are a small minority of the pancreatic cells, they exert a huge influence on our physiology. The cells of the islet, and their endocrine products, are: alpha cells: glucagon. beta cells: insulin. delta cells: somatostatin. F cell (also called PP cells): pancreatic.
