How does the vomit go up?

How does the vomit go up?

English Vocabulary: Vomit / Throw Up

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answers (2)

Answer 1
June, 2021

The act of vomiting includes three phases: nausea, the urge to vomit, and vomiting itself. Nausea is an extremely unpleasant sensation in the pharyngeal or epigastric region that precedes vomiting. With nausea, the tone of the stomach is reduced, peristalsis (wave-like contractions of the walls) is either absent, or greatly slowed down. At the same time, the tone of the duodenum and the proximal (i.e., nearest) part of the jejunum increases, duodenogastric refluxes (reflux of the contents of the duodenum into the stomach) occur. With the urge to vomit during inhalation with a closed mouth, there is a convulsive contraction of the respiratory muscles and diaphragm, and during exhalation - the anterior abdominal wall. At the same time, the tone of the antrum (lower) part of the stomach increases, and the tone of the body and cardial (upper) part decreases. Vomiting itself is a complex sequence of involuntary reflexes. During vomiting, the muscles of the abdominal wall and diaphragm are vigorously contracted, the abdominal (abdominal) part of the esophagus moves into the chest, the muscle tone of the fundus of the stomach decreases, the lower esophageal sphincter opens (muscle thickening, which normally prevents food from flowing from the stomach into the esophagus), the pylorus contracts and the contents of the stomach are thrown into the esophagus and further into the oral cavity. This closes the epiglottis and stops breathing, which prevents the entry of vomit into the respiratory tract. With nausea and vomiting, signs of a violation of vegetative activity often appear: increased salivation, pallor of the skin, sweating. A number of people have heart rhythm disturbances: with nausea - tachycardia (rapid heartbeat), with the urge to vomit - bradycardia (decreased heart rate).

Answer 2
June, 2021

Vomiting rises to the top due to increased pressure inside the stomach, which is created by a decrease in its volume by contraction of the abdominal muscles. For more efficient lavage of vomit, the outlet valve from the stomach is closed and the inlet valve is opened, the stomach itself relaxes for greater compliance.

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