Physiology Which of the following is the best-known metabolic function of the lung: A Inactivation of serotonin B Conversion of angiotensin-I to angiotensin-II C Inactivation of bradykinin D Metabolism of basic drugs by cytochrome P450 system 💡 Explanation Which of the following is the best-known metabolic function of the lung: ✓ Correct Answer: B. Conversion of angiotensin-I to angiotensin-II