The importance of the ionic product for water to understand the physiology of the acid-base balance in humans.

Abstract:

:Human plasma is an aqueous solution that has to abide by chemical rules such as the principle of electrical neutrality and the constancy of the ionic product for water. These rules define the acid-base balance in the human body. According to the electroneutrality principle, plasma has to be electrically neutral and the sum of its cations equals the sum of its anions. In addition, the ionic product for water has to be constant. Therefore, the plasma concentration of hydrogen ions depends on the plasma ionic composition. Variations in the concentration of plasma ions that alter the relative proportion of anions and cations predictably lead to a change in the plasma concentration of hydrogen ions by driving adaptive adjustments in water ionization that allow plasma electroneutrality while maintaining constant the ionic product for water. The accumulation of plasma anions out of proportion of cations induces an electrical imbalance compensated by a fall of hydroxide ions that brings about a rise in hydrogen ions (acidosis). By contrast, the deficiency of chloride relative to sodium generates plasma alkalosis by increasing hydroxide ions. The adjustment of plasma bicarbonate concentration to these changes is an important compensatory mechanism that protects plasma pH from severe deviations.

journal_name

Biomed Res Int

authors

Adeva-Andany MM,Carneiro-Freire N,Donapetry-García C,Rañal-Muíño E,López-Pereiro Y

doi

10.1155/2014/695281

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

695281

eissn

2314-6133

issn

2314-6141

journal_volume

2014

pub_type

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