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Pancreatic islet of Langerhans
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Pancreatic islet of Langerhans
Islet of Langerhans. Light micrograph of a section through an islet of Langerhans (pale, centre) in pancreas tissue. This clump of secretory cells forms part of the endocrine system of the body, which releases hormones into the blood. It is composed of numerous beta cells (purple), which secrete insulin, and the less numerous alpha cells (pink), which secrete glucagon. Insulin stimulates the uptake of glucose and amino acids from the bloodstream, whereas glucagon has the opposite effect; it stimulates the breakdown of glycogen in the tissues. This causes glucose and amino acids to be released into the blood. Magnification unknown
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6451121
© CNRI/SCIENCE PHOTO LIBRARY
Alpha Beta Endocrine System Glucagon Histological Histology Hormone Hormones Insulin Islet Of Langerhans Metabolic Pancreas Pancreatic Regulation Regulatory Secretion Secretory Stain Stained Tissue Cells Light Micrograph Section Sectioned
EDITORS COMMENTS
This print from Science Photo Library showcases the intricate beauty of the Pancreatic Islet of Langerhans. Located at the center of the pancreas tissue, this cluster of secretory cells plays a vital role in our body's endocrine system. The islet consists primarily of beta cells, depicted here in a mesmerizing shade of purple, which are responsible for secreting insulin. Insulin acts as a key that unlocks our cells' ability to absorb glucose and amino acids from the bloodstream. Contrasting with the beta cells are the alpha cells, portrayed in an elegant pink hue. These alpha cells secrete glucagon, another essential hormone involved in regulating blood glucose levels. Unlike insulin, glucagon stimulates glycogen breakdown within tissues, leading to increased release of glucose and amino acids into the bloodstream. The magnificence captured by this light micrograph leaves us marveling at nature's complexity and precision. This image provides valuable insights into cellular composition and function within our bodies. As we explore this visual masterpiece further, we gain a deeper understanding of how these remarkable pancreatic islets contribute to metabolic regulation and overall well-being. It serves as a reminder that even on a microscopic level, there is profound beauty hidden within our anatomy – an awe-inspiring testament to life's intricacies.
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