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Stratum spinosum: This layer, which is also known as the squamous cell layer, is the thickest layer of the epidermis. It contains newly formed keratinocytes, which are strengthening proteins. It also contains Langerhans cells that help prevent infection. 3 Stratum granulosum: This layer contains more keratinocytes moving toward the surface.What do Langerhan cells mean?
medical Definition of Langerhans cell. : a dendritic cell of the interstitial spaces of the mammalian epidermis that functions as an antigen-presenting cell which binds antigen entering through the skin and transports it to the lymph nodes.What is secreted by the islet of Langerhans?
Key Points The pancreas reveals two different types of parenchymal tissue: exocrine acini ducts and the endocrine islets of Langerhans. The hormones produced in the islets of Langerhans are insulin, glucagon, somatostatin, pancreatic polypeptide, and ghrelin. The pancreatic hormones are secreted by alpha, beta, delta, gamma, and epsilon cells.Who discoveredthe islets of Langerhans in the human body?
The pancreatic isletsor islets of Langerhansare the regions of the pancreasthat contain its endocrine(hormone-producing) cells, discovered in 1869 by Germanpathological anatomist Paul Langerhans . The pancreatic islets constitute 1-2% of the pancreas volume and receive 10-15% of its blood flow.