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婴儿呛奶是咽喉“活塞”——会厌失灵造成的。会厌在食道与气道交汇处,是指挥食物和空气分流的一个特殊组织结构,好像一个带折叶的盖子,能灵活地掀开和盖住声门气管。当呼吸或说话时,会厌向上张开,使喉腔开放,气体自由出入;当咽东西时,会厌向下,盖住气管,使东西不至进入气管内只能进入食道。那么是什么在指挥会厌呢?当然是由人体神经系统通过吞咽反射等一系列复杂肌群活动来完成的。新生儿、婴幼儿神经系统发育不完善,易造成会厌失灵,而呛奶就是其主要表现。
Babies choking milk is throat “Piston” - caused by epiglottis failure. Epiglottis at the junction of the esophagus and airway is a special organizational structure that directs the diversion of food and air as if it had a hinged lid that flexibly opened and covered the glottis trachea. When breathing or talking, the epiglottis opens upwards, leaving the throat open, allowing free access to the gas; when swallowing, the epiglottis down, covering the trachea so that it does not get into the trachea until it enters the esophagus only. So what is the command epiglottism? Of course, by the human nervous system through swallowing reflex and a series of complex muscle activities to complete. Neonates, infants nervous system development is imperfect, easy to cause epiglottis failure, and choking milk is its main performance.