What happens when the central bank of a country “injects” cash to it’s economy? Where does the money come from, and where does it go?

Question

What happens when the central bank of a country “injects” cash to it’s economy? Where does the money come from, and where does it go?

In: Economics

Answer 1

Another method of injecting money is by applying buy-backs of governmental bonds, from the public.
Reducing cash in the market is usually made the other way around, by issuing bonds for the public, thus making them spend money that is going our of circulation.