Mechanism of regulating the concentration of H +: the renal pulmonary stromal system

2021-05-06 10:01 AM

When there is a change in H + levels, the buffering systems in the body fluids respond within seconds to minimize the change. The buffering system cannot remove H + or add H + to the body.

Three main systems regulate the H + concentration of bodily fluids to prevent acidosis or alkalosis: (1) acid-base buffering in body fluids, where the buffers will immediately coalesce with 1 acid or a base to prevent excessive changes in the H + concentration; (2) the respiratory organ is the place where CO2 is eliminated from the extracellular fluid from the body (H2CO3); (3) The kidneys, which excrete acids or alkalis in the urine, help to regulate the concentration of H + in the body fluids within the normal range, without acidosis or alkalosis.

When there is a change in H + levels, the buffering systems in the body fluids respond within seconds to minimize the change. The buffering system cannot remove H + or add H + to the body, but it has the ability to bind to acids or bases to restore the body's equilibrium.

The second regulatory mechanism is the respiratory system, which will work within a few minutes to remove CO2 and thereby remove H2CO3 from the body. The first two mechanisms that keep H + concentrations from changing too much until the third mechanism is activated is the kidney. The kidneys remove excess acids or bases from the body. Although the renal response is relatively slow compared to other regulatory mechanisms, within 1 hour to several days, it is the most powerful of the various acid-base regulatory mechanisms in the body.

 

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