Taber’s Cyclopedic Medical Dictionary Online + Mobile powered by Unbound Medicine. Find 65,000 medical and nursing definitions. Download to iPhone, iPad, and Android. Explore these free sample topics:
-- The first section of this topic is shown below --
[L. vomitare, to vomit]
1. Material that is ejected from the stomach through the mouth.
2. To eject stomach contents through the mouth.
SYN: SEE: vomitus
SEE: melena; SEE: nausea
The act is usually a reflex involving the coordinated activity of both voluntary and involuntary muscles. A certain position is assumed, the glottis is closed, the diaphragm and abdominal muscles contract, and the cardiac sphincter of the stomach relaxes while antiperistaltic waves course over the duodenum, stomach, and esophagus.