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呃逆,俗称打嗝,医学上谓之膈肌痉挛,是由膈肌不自主的间歇性收缩运动所引起的。由于膈肌是呼吸肌,收缩时增加胸廓的纵径,胸腔容积扩大,以致空气突然被吸人呼吸道内,同时伴有声带的闭合,所以,产生一种奇特怪声。引起呃逆的原因大部分都属于机能性的,如情绪的改变,饮食过急、过饱,吸入冷空气等。健康人饭后发生的呃逆,是由于吞咽时食物经过食管时刺激膈肌的缘故。少数的呃逆是由器质性
Hiccups, commonly known as hiccups, medically referred to as diaphragm spasm, is caused by intermittent diaphragmatic involuntary contraction movement. As the diaphragm is the respiratory muscles, thoracic contraction of the increase when the longitudinal diameter, chest volume expansion, so that air is suddenly absorbed into the respiratory tract, accompanied by the vocal cords closed, so have a strange sound strange. Most of the causes of hiccups are functional, such as emotional changes, eating too fast, too full, inhaling cold air and so on. Hiccup in healthy people after a meal is due to swallowing foods through the esophagus to stimulate the diaphragm. The few hiccups are organic