Normal and abnormal blood pH

• Dissociation of the chemical substances in the body fluids can result in the production of free hydrogen ions. • The pH scale is used to measure the concentration of hydrogen ions in solution. • Normal blood pH values vary around 7.4. • When hydrogen ion concentration increases, the pH value goes down resulting in a state of acidosis. • When hydrogen ion concentration decreases, the pH value goes up resulting in a state of alkalosis. • Life sustaining chemical reactions are catalyzed by enzymes which can only function effectively within narrow pH ranges.

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