And what the liver does, it transforms that ammonia into urea, which is a nontoxic substance that can be excreted by our kidneys. Now, the liver also detoxifies pollutants, various types of contaminants and many, many other things. So the liver converts these toxins, which are usually fat soluble, into water soluble waste products that can easily be excreted in either our bile, which eventually ends up in our feces and is excreted by the large intestine. It can end up in the urine, which is excreted by the kidneys, or it can end up in the sweat, which is excreted by our skin. And we'll talk more about sweat and the skin structure in a future lecture. Now, the third function of our liver is in blood storage blood filtration and the recycling of Erythrocytes, also known as red blood cells.