How does our body react to acidosis and regulate it?

When we have an acidosis it means our body cannot rely on bicarbonate ions anymore.

We have either lost an important amount of bicarbonate or we do not have enough of them to neutralize the acid ions.

Our body, in certain limits, can buffer the acidity by using other alkaline compounds. Those alkaline compounds can be potassium, magnesium, calcium...

First, the body uses readily available supplies. Those are the one provided by the food we eat.

If it does not find enough alkaline compounds the body is going to mobilize calcium from the bones and teeth and potassium from the muscles as buffers.

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