Not associated with synthesis of hydrochloric acid in the stomach: The alkaline tide.
The alkaline tide is not associated with the synthesis of hydrochloric acid in the stomach. Here's a step-by-step explanation:
Primary active transport of protons: The synthesis of hydrochloric acid in the stomach involves primary active transport of protons (H+) by the parietal cells of the gastric glands.
This process involves the secretion of hydrogen ions into the stomach lumen, which combine with chloride ions (Cl-) to form hydrochloric acid (HCl).
Facilitated diffusion of chlorides into the stomach lumen: Chloride ions play a crucial role in the synthesis of hydrochloric acid. After being transported into the parietal cells, chloride ions are then transported across the apical membrane into the stomach lumen through facilitated diffusion.
This process allows chloride ions to combine with hydrogen ions and form hydrochloric acid.
The alkaline tide: The alkaline tide refers to a postprandial (after eating) phenomenon where there is an increase in the pH of the blood leaving the stomach due to the secretion of bicarbonate ions (HCO3-) by the parietal cells.
This bicarbonate secretion helps to neutralize the acidic environment in the stomach and maintain the pH balance. However, the alkaline tide is not directly involved in the synthesis of hydrochloric acid.
In summary, while primary active transport of protons and facilitated diffusion of chlorides are associated with the synthesis of hydrochloric acid, the alkaline tide is not directly involved in this process.
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