Humoral Control of the Pulmonary Circulation

During the last several years many studies have attempted to describe the action of vasoactive substances on the pulmonary vascular bed, to charac­ terize the humoral receptors of its smooth muscle receptors, and to deter­ mine the make-up of the cascades of activation and release of agents that may mediate the pulmonary vascular responses to their major regulators, i.e. the levels of O2 and CO2,