Alcohol is drunk. Alcohol gets right into the stomach. A little of it goes through the wall of the stomach and into the bloodstream but most of the alcohol goes down into the small intestine. Alcohol goes from the stomach into the small intestine. Most of the alcohol then goes through the walls of the intestine and into the bloodstream.
Alcohol goes to the brain almost as soon as it is drunk.
The bloodstream carries it there. Alcohol keeps passing through the brain until the liver has had time to oxidize all the alcohol. As the bloodstream carries the alcohol around the body, it carries it through the liver, too. The liver changes the alcohol into water, carbon dioxide, and energy. The process is called oxidation.