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Grade 12th passZoology

Hello anybody,
I have a doubt what causes a hiccup ?
Can anybody please explain ?

Profile image of HI
7 Years agoGrade 12th pass
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1 Answer

Profile image of Arun
7 Years ago
Hiccups are sudden, involuntary contractions of the diaphragm muscle. As the muscle contracts repeatedly, the opening between the vocal cords snaps shut to check the inflow of air and makes the hiccup sound. Irritation of the nerves that extend from the neck to the chest can cause hiccups.

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