Sense of course of a working life first attested 1803. v. 1590s, to charge at a tournament, from career (n.). The meaning move rapidly, run at full speed (1640s) is from the image of a horse passing a career on the jousting field, etc. Related: Careered; careering.
Contractions of the stomach muscle, called peristaltic waves, grind, crush and mix the food producing a liquefied substance called chyme.. The pyloric sphincter separates the stomach from the duodenum. This valve keeps food and gastric juices in the stomach until liquefied enough to proceed into the duodenum.
The duodenum is the upper portion of the small intestines in mammals. The duodenum is the section of the intestines that connects to the stomach and pancreas.It's the location where digestion takes place.he duodenum's function is to accept chyme from the stomach and complete the digestion of food. Chyme is the mixture of stomach acid and swallowed food. Bile released from the gallbladder is also delivered to the duodenum for fat digestion.