What is the primary site of absorption for most orally administered drugs due to its extensive surface area and high vascularity?
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Correct answer: Small intestine
The small intestine possesses villi and microvilli that vastly increase the surface area available for diffusion. Even for drugs that are chemically favored for stomach absorption, the sheer surface area of the intestine makes it the dominant site.
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More Drug Absorption questions
- Which of the following describes 'First-Pass Metabolism'?
- A drug with a high 'Bioavailability' (F value) of 0.9 suggests that:
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- Which factor is most likely to delay the absorption of a drug that is primarily absorbed in the upper small intestine?
- Which route of administration is subject to the highest degree of first-pass metabolism?
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