A Hiccup: This is an automatic action that the body can not control.
Charles Osborne first to hiccup in 1922 after a hog fell on top of him. He wasn't cured until 68 years old later and is now listed by the world record holder for hiccup long existence. For the present, Florida teen Jennifer Mee may hold the record for the most recurrent hiccups, 50 times per minute for more than 4 weeks in 2007.
what causes hiccups?
Doctors identify that a round of hiccups frequently follows from stimuli, that stretch the stomach, like swallowing air or too rapid drinking, and eating. Other associate hiccups with intense emotions or a response to them: laughing, sobbing, anxiety, ad excitements.
Hiccups begin with a reflex spasm or unforeseen contraction of the diaphragm, the large dome-shaped muscle under our lungs, that we use to inhale air. This is followed almost at once by the unforeseen closure of the vocal cords and the start between them, which is called the glottis.
The move of the diaphragm begins a sudden intake of air, but the closure of the vocal cords stops it from entering the throat and extends the lungs. It also creates the characteristic sound "HIC". Till now date, there is no known reason for hiccups. They don't seem to supply any, medical or physiological advantage.
Anatomical structures, and physiological mechanisms, with no apparent purpose present challenges to evolutionary biologists. Hiccups start many millions of years before the aspect of humans. The lung is believed to have evolved as a structure to allow early fish, many of which lived in stagnant water, warm with little oxygen, to take the lead of the profuse oxygen in the air overhead.
When offshoot of these animals later moved onto land, that's close to the much more fast changes faced by frogs today. As they change from tadpoles with gills to adults with lungs. This hypothesis recommended that the hiccups are an antique of the ancient change from water to land. An inhalation that could pass water over gills followed by a more fast closure of the glottis stop water from entering the lungs.