Hiccups are an uncontrollable contraction of the diaphragm muscle that we use to draw air into our lungs.
打嗝是横膈膜肌肉无法控制的收缩，我们用它把空气吸入肺部。
Diaphragm muscle
原声例句
科学洞察双语版
TED-Ed（视频版）
Sleep apnea stops diaphragm muscles from contracting.
睡眠呼吸暂停会阻止横膈膜肌肉收缩。
Osmosis-解剖与生理
That's because the diaphragm muscle lowers during inspiration, and that creates negative pressure in the chest to bring in air, and that negative pressure also brings a bit more venous blood back to the right atrium and right ventricle.
这是因为吸气时膈肌下移，胸腔内的负压将空气吸入；这个负压同时将一些静脉血倒吸回右心房和右心室。
中文百科
横膈膜 Thoracic diaphragm
（重定向自Diaphragm muscle）
在哺乳动物的解剖学中，横膈膜（英语：Thoracic diaphragm）是一层骨骼肌薄膜，延展及肋骨底部。横膈膜将胸腔与腹腔相分隔，并对呼吸运行重要功能。解剖学中的膈膜（英语：Diaphragm）也可以指其他平坦的结构，例如泌尿生殖膈与骨盆膈，但普遍指横膈膜。其他脊椎动物，如两栖类与爬虫类，也有横膈膜或类似横膈膜的构造，但腹腔内肺脏的位置等重大细节与人类相异。
英语百科
Thoracic diaphragm 横膈膜
（重定向自Diaphragm muscle）
In human anatomy, the thoracic diaphragm, or simply the diaphragm (Ancient Greek: διάφραγμα diáphragma "partition"), is a sheet of internal skeletal muscle that extends across the bottom of the thoracic cavity. The diaphragm separates the thoracic cavity containing the heart and lungs, from the abdominal cavity and performs an important function in respiration: as the diaphragm contracts, the volume of the thoracic cavity increases and air is drawn into the lungs.