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11 Οκτ 2012 · Buffer system. This document discusses acid-base regulation in the human body. It covers topics such as the carbonic acid-bicarbonate buffer system, respiratory regulation of hydrogen ion concentration, and disorders of acid-base balance like respiratory acidosis and alkalosis and metabolic acidosis and alkalosis.
2 Ιουν 2015 · Buffers in the body resist changes in pH and maintain it within a narrow range. The major buffer systems are bicarbonate, phosphate, and proteins. Bicarbonate buffers work by absorbing excess hydrogen ions in the blood and tissues. The kidneys and lungs work together to control bicarbonate and carbon dioxide levels to regulate pH.
29 Αυγ 2019 · The addition of an acid or a base to a substance changes its pH level. A buffer is a solution (or a substance) that has the ability to maintain pH and bring it back to its optimal value. It does this by the additional or removal of hydrogen ions.
Various buffer systems exist in body fluids (see Table) to minimise the effects on pH of the addition or removal of acid from them. In ECF, the bicarbonate system is quantitatively the most important for buffering metabolic acids.
A variety of buffering systems permits blood and other bodily fluids to maintain a narrow pH range, even in the face of perturbations. A buffer is a chemical system that prevents a radical change in fluid pH by dampening the change in hydrogen ion concentrations in the case of excess acid or base.
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bicarbonate: An alkaline, vital component of the pH buffering system of the human body that maintains acid–base homeostasis. buffer: A solution used to stabilize the pH (acidity) of a liquid. pH: In chemistry, a measure of the activity of the hydrogen ion concentration.
