Why do you vomit and what happens in the digestive system when vomit?
Vomiting is the involuntary expulsion of the contents of the stomach through the mouth. It is a natural reflex that is triggered by a variety of factors, including:
* Nausea: Nausea is a feeling of queasiness or sickness that often precedes vomiting. It can be caused by a variety of factors, including motion sickness, food poisoning, and certain medications.
* Digestive problems: Vomiting can also be caused by digestive problems, such as gastroenteritis (inflammation of the stomach and intestines) and bowel obstruction.
* Central nervous system problems: Vomiting can also be caused by problems with the central nervous system, such as concussions and brain tumors.
* Metabolic disorders: Vomiting can also be caused by metabolic disorders, such as diabetes and kidney failure.
* Pregnancy: Vomiting is a common symptom of pregnancy, especially during the first trimester.
What happens in the digestive system when you vomit?
When you vomit, the following happens:
1. The muscles of the stomach contract, forcing the contents of the stomach up into the esophagus.
2. The epiglottis, a flap of tissue that covers the windpipe, closes to prevent vomit from entering the lungs.
3. The vocal cords close, creating a barrier between the mouth and the lungs.
4. The muscles of the diaphragm and abdominal wall contract, forcing the vomit out of the mouth.
Vomiting can be a very unpleasant experience, but it is usually a harmless reflex that helps to protect the body from harmful substances.