Most drugs that are taken orally enter the bloodstream through the walls of the
A) stomach.
B) mouth.
C) intestine.
D) esophagus.
E) lungs.

Question

Quizplus · Accepted Answer

The majority of orally-taken drugs are absorbed through the walls of the intestine. The lining of the small intestine has a large surface area due to its folds and projections called villi, which allows for efficient absorption into the bloodstream. The stomach does absorb some drugs, but it is not the primary site of absorption for most medications. The mouth and esophagus are not designed for absorption and the lungs are not typically involved in oral drug administration.

Most Drugs That Are Taken Orally Enter the Bloodstream Through