Production of gastric acid, animation

Videonummer 11938285
Animation showing the production of gastric acid in a parietal cell (top left) of the stomach. In the parietal cell's cytoplasm carbon dioxide (CO2), from the blood stream (bottom left), and water (H2O) react to form carbonic acid (H2C03). The carbonic acid immediately disassociates into hydrogen ions (H+) and bicarbonate ions (HCO3-). The bicarbonate ions are transported out of the cell, ultimately to the blood stream, via an antiporter that transports chloride ions (Cl-) into the cell. Chloride ions and potassium ions (K+) are then excreted from the cell. The chloride ions enter the gastric gland for secretion into the stomach. The potassium ions are pumped back into the cell in exchange for the hydrogen ions, which are also excreted to the gastric glands, where they react with the chloride ions to form hydrochloric acid (HCl).
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Biocosmos / Francis Leroy & Marie Martinache
Modell-Rechte: nicht erforderlich
Länge: 40 Sekunden
Seitenverhältnis: 16:9
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