Here is why you can throw up

Nausea and vomiting are usually two clinical terms that goes hand in hand. This is because nausea can lead to vomiting and the vice-versa is true. These occur as symptoms for an underlying illness. Nausea is the sensation or desire to vomit whereas vomiting is the act of forcible emptying of the stomach. During vomiting, the stomach overcomes pressures that prevent throw-up or return of stomach contents such as food materials and stomach secretions. When you look at someone vomiting, you realise the abdominal muscles movements due to inward and outward pressures to force the lower portion of the esophagus to open or sphincter at the junction of esophagus and stomach to open. The esophagus is anatomical tube that connects mouth and stomach.