Pharmaceutics Xenobiotics Across Bio Membrane Practice Test

Absorption from the oral cavity can occur through the buccal or sublingual mucosa, allowing drugs to enter systemic circulation. This route is used for medicines designed for rapid effect or to bypass first-pass metabolism in the liver. Whether absorption happens depends on drug properties such as lipophilicity, molecular size, and the degree of ionization at saliva pH, as well as formulation and contact time with the mucosa. Because there is valid, real-world potential for absorption via the oral cavity for suitable drugs, the statement about absorption from this site being possible is true. The other options are less accurate because they suggest either no information, partial truth, or a false universal claim, whereas we know absorption can happen under the right conditions.