论文部分内容阅读
人为什么会放屁?其实屁既是呼吸过程中吞下的空气,也是胃肠道内产生的气体。这些气体,一部分由血液吸收经肺部排放,其余的就以放屁的方式从肛门排出体外。这些气体的主要成分包括氧、氮、氢、二氧化碳和甲烷。氮是没有任何味道的,更不会发臭,如果屁发出臭味,说明身体内部出问题,可能是由肠道腐败造成的。在人体消化过程中,食物经胃消化后将残渣送到大肠,经细菌作用分解成大便,这时气体被污染,从肛门中排出,形成臭屁。医生指出,婴儿出生10秒钟后必须放屁,否则后
Why people fart? In fact, fart is both the air swallowed during the breath, but also the gas produced in the gastrointestinal tract. Some of these gases are absorbed by the bloodstream and discharged through the lungs. The rest is excreted from the anus through the fart. The main components of these gases include oxygen, nitrogen, hydrogen, carbon dioxide and methane. Nitrogen does not have any taste, it will not smelly, if the fart smells, indicating that the internal problems, may be caused by intestinal corruption. In the process of digestion in human body, the food is sent to the large intestine through stomach digestion, decomposed into stool by bacteria action, then the gas is polluted and discharged from the anus to form a cocky fart. Doctors pointed out that the baby must be farted after 10 seconds, or after