Alpha Cell

Alpha cells are endocrine cells in the islets of Langerhans of the pancreas. They make up 15-20% of the cells in the islets. They are responsible for synthesizing and secreting the peptide hormone glucagon, which elevates the glucose levels in the blood. In rodents alpha-cells are located in the periphery of the islets, in humans the islet arcitechture is generally less organized and alpha-cells are frequently observed inside the islets as well. In the electron microscope alpha-cells can be identified by their characteristic granules with a large dense core and a small white halo.
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a type of cell in the pancreas. Alpha cells make and release a hormone called glucagon. The body sends a signal to the alpha cells to make glucagon when blood glucose falls too low. Then glucagon reaches the liver where it tells it to release glucose into the blood for energy.
  

B: (Biologi) sel alfa
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