Question

Which one of the following is not a characteristic for the small intestine?

(a) Peristaltic movement

(b) Long transit time

(c) High permeability

(d) PH 4-9

This question was posed to me in an online quiz.

This interesting question is from Drugs Absorption from Non Oral Extravascular Sites in section Absorption of Drugs of Drug Biotechnology

Answer 1

Right answer is (d) PH 4-9

The best explanation: The pH of the small intestine is in the range of 5-7.5. It gives the most favourable drugs to remain unionized. The permeability movement of the intestine is slow, transit time is long and the permeability is high.