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以往认为肺仅是一个呼吸器官,现在逐渐认识到肺还是一个代谢器官,特别注意到肺能够代谢循环血内的各种血管活性物质。所谓血管活性物质,包括调节血压、血管阻力、心输出量、血容量及血管内外体液和蛋白质交换的各种循环和组织因素。附表所示受肺功能影响的各类物质,并能直接看到肺代谢功能的特征:(1)肺接受经过各种化学过程处理的血管活性物质,如肽类、胺类、环核苷酸及脂类;
In the past that the lung is only a respiratory organ, and now gradually realize that the lungs are still a metabolic organ, with particular attention to the lungs can metabolize the blood circulation of various vasoactive substances. The so-called vasoactive substances include various circulatory and tissue factors that regulate blood pressure, vascular resistance, cardiac output, blood volume, and exchange of body fluid and protein inside and outside the blood vessel. Various types of substances affected by pulmonary function as shown in the attached table, and can directly see the characteristics of lung metabolism: (1) The lungs receive vasoactive substances that undergo various chemical processes such as peptides, amines, cyclic nucleosides Acids and lipids;