How does the body get rid of blood from internal bleeding?

When there's internal bleeding, the body responds to it as a foreign body. The first response is to try and stop the bleeding. This can be done in several ways, such as by creating blood clots (coagulation) or by constricting blood vessels (vasoconstriction).

If the bleeding is not stopped, or if it is too severe, the body may send out specialised cells to absorb and/or break down the pooled blood. These cells may include macrophages and other phagocytic cells, as well as red blood cell recycling agents like haemoglobin and haemopexin. Eventually, the body absorbs and removes the break-down products of the broken-down blood cells.