肺容积(Lung volume)是指呼吸道和肺泡的总容量,其大小随呼吸运动而改变。深吸气后肺容积最大,肺内所含气量最多,此时的肺容积称为肺总量。在呼气过程中肺容积逐渐降低,于深呼气后肺容积最小,此时的肺容积称为残气容积。肺容积的大小直接影响到肺的 Lung volume refers to the total volume of the respiratory tract and alveoli, the size of which varies with respiratory motion. Deep inspiration after the largest lung volume, lungs contained the most gas, lung volume at this time known as the total lung volume. In the expiratory process, the lung volume gradually decreased in the deep expiratory lung volume is the smallest, at this time the lung volume is called residual volume. The size of the lungs directly affects the lungs