What percentage of alcohol enters the bloodstream via the stomach walls?

The correct choice indicates that approximately 20% of alcohol enters the bloodstream through the stomach walls. This is significant because it highlights the role of the stomach in the absorption process. Alcohol is absorbed in different parts of the digestive system, but the stomach is responsible for a portion of this absorption before the alcohol continues into the small intestine, where the majority (about 80%) is absorbed.

The stomach lining allows some alcohol to pass directly into the bloodstream, which contributes to the immediate effects of alcohol consumption, including the onset of intoxication. Various factors, such as the presence of food in the stomach, the concentration of alcohol in the beverage, and individual physiological differences, can influence the rate of absorption and the percentage that enters the bloodstream through the stomach.

Understanding this aspect of alcohol absorption is critical for recognizing how quickly individuals may feel the effects of drinking, as alcohol does not need to be metabolized before it enters circulation when absorbed through the stomach.