Blood pH - There is a complex relationship between the pH levels and fundamental biochemical functions in the human body.

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There is a complex relationship between the pH levels and fundamental biochemical functions in the human body. pH is the measurement of acidity or alkalinity of a substance, in this instance blood. pH stands for ‘potential Hydrogen’. The pH scale runs from 0 to 14 and is the indicator of the level of free protons (H+) in a system. At the lower end of the scale indicates a strong, complete acid that that is saturated with highly reactive free protons. At the higher end of the scale it indicates a strong, complete alkali with virtually no free protons and is saturated with highly reactive hydroxide ions (OH-). In the middle of this pH scale at 7 indicates that it is neutral, neither acid or alkaline. The pH scale is logarithmic so each number step up the scale is a tenfold increase.

The human body functions at its best in a slight alkaline environment. The acid/alkaline balancing mechanisms are what is needed to for a healthy body chemistry.

The blood pH in a healthy human body is kept within a very narrow range of 7.35 and 7.45. It is the lungs and the kidneys that are the most responsible organs in keeping blood pH at a reasonable level between 7.35 and 7.45.The kidneys through their complex filtration functions are able to cleanse  the excess venous acids an remove them from the body via the urinary tract. The kidneys are responsible for releasing ammonia into the blood as a buffer to bring the blood to normal pH levels. Oxygen that has been absorbed through the lungs also helps in pH balance. Oxygen combines with carbon in certain proteins to produce carbonates, these are buffering agents that prevent acidic build-up.

The Importance of the system:

The importance of maintaining this system is to prevent the blood pH either raising above or below the necessary 4.35-4.45. If however, the system does not function properly this will result in illness and perhaps in death.

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If there is too much acid in the blood the definition is acidosis and if there is not enough and the blood is too alkaline, this is known as alkalosis. Acidosis and alkalosis can result from metabolic or respiratory causes. Respiratory acidosis and alkalosis are the result of abnormal breathing patterns. Alkalosis is caused by hyperventilation that accompanies hysteria, anxiety, or prolonged crying. Acidosis can result from hypoventilation brought on by such factors as an overdose of depressant narcotics or anesthesia. Metabolic acidosis can result from the metabolic production of acids in the body or the elimination of alkaline materials as ...

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