Physiology General 7f1b9bc1 Not a stimulus for pulmonary vasoconstriction: A Hypoxemia B Hypercapnia C PGI2 D Thromboxane High-Yield Explanation C i.e. PGI2The unique feature of pulmonary vasculature is that the hypoxia tends to produce Vasconstriction (where as in other system it produces Vasodilation)