What is the alkaline tide associated with?

The alkaline tide is characterized by an increase in blood bicarbonate levels. This phenomenon occurs when the stomach secretes hydrochloric acid (HCl) to aid in digestion, particularly after eating. The secretion of acid results in the release of bicarbonate into the bloodstream as the parietal cells of the stomach exchange bicarbonate ions for chloride ions (Cl-) during acid production. As the bicarbonate enters the blood, it raises the pH, leading to the alkaline tide. This temporary increase in blood pH is typically observed following the digestion of meals.

Understanding this connection helps grasp the physiological processes occurring in the body, particularly in relation to digestion and acid-base balance. The increase in bicarbonate is a key component of the alkaline tide, underscoring its importance in maintaining the pH balance in the body's fluids.