The chyme then moves through the jejunum and the ileum, where digestion progresses, and the nonuseful portion continues onward into the large intestine. The duodenum also produces the hormone secretin to stimulate the pancreatic secretion of large amounts of sodium bicarbonate, which then raises pH of the chyme to 7. The duodenum is a short section of the small intestine located between the stomach and the rest of the small intestine. CCK also causes the release of digestive enzymes from the pancreas.
The duodenum secretes a hormone, cholecystokinin (CCK), which causes the gall bladder to contract, releasing alkaline bile into the duodenum.
Depending on the quantity and contents of the meal, the stomach will digest the food into chyme in anywhere between 40 minutes to 3 hours at most.With a pH of approximately 2, chyme emerging from the stomach is very acidic. Chyme slowly passes through the pyloric sphincter and into the duodenum, where the extraction of nutrients begins. Wikipedia (0.00 / 0 votes) Rate this definition:Ĭhyme or chymus ( from Greek χυμός khymos, "juice") is the semi-fluid mass of partly digested food that is expelled by the stomach, through the pyloric valve, into the duodenum (the beginning of the small intestine).Ĭhyme results from the mechanical and chemical breakdown of a bolus and consists of partially digested food, water, hydrochloric acid, and various digestive enzymes.
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