论文部分内容阅读
在严寒的冬天,在室内生着炉火取暖,一不小心,往往会引起煤气中毒。煤气为什么会使人中毒呢?这得从人体血液中运输队——红血球谈起。红血球里有一种血红蛋白担负着输送气体的重要工作。当血液通过肺脏时,血红蛋白就跟从肺泡渗入毛细血管内的氧气结合,形成“氧合血红蛋白”,随血液回到心脏,再经过动脉送到身体各部分组织的毛细血管里,在这里氧合血红蛋白就会把它携带的氧“卸”下来,供组织细胞利用。然后,血红蛋白“装载”上组织新陈代谢排出的废气二氧化碳,通过静脉回到心脏,再流到肺脏的毛细血管,“卸”下二氧化
In the cold winter months, there is a fire in the room to warm up, and accidentally, it often causes gas poisoning. Why does gas cause poisoning? This must be talked about from the red blood cell of the human blood transport team. There is an important task for hemoglobin in the red blood cells to carry gas. When blood passes through the lungs, hemoglobin is combined with oxygen from the infiltrated alveoli into the capillaries to form “oxygenated hemoglobin,” which returns to the heart as the blood passes through the arteries to the capillaries of various parts of the body where oxyhemoglobin is formed. The oxygen it carries will be “unloaded” for use by tissue cells. Then, hemoglobin “loads” the carbon dioxide, which is excreted in the tissue metabolism, and returns to the heart through the veins and then to the capillaries of the lungs.