Physiology General 1532d335 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 High-Yield Explanation B i.e. Conversion of angiotensin - Ito angiotension II.