<P> At a pH of 7, the enzymes that were present from the stomach are no longer active . This then leads into the further breakdown of the nutrients still present by anaerobic bacteria, which at the same time help to package the remains . These bacteria also help synthesize vitamin B and vitamin K, which will be absorbed along with other nutrients . </P> <P> Chyme has a low pH that is countered by the production of bile, helping to further digest food . Chyme is part liquid and part solid: a thick semifluid mass of partially digested food and digestive secretions that is formed in the stomach and small intestine during digestion . Chyme also contains cells from the mouth and esophagus that slough off from the mechanical action of chewing and swallowing . </P> <P> After hours of mechanical and chemical digestion, food has been reduced into chyme . As particles of food become small enough, they are passed out of the stomach at regular intervals into the small intestine, which stimulates the pancreas to release fluid containing a high concentration of bicarbonate . This fluid neutralizes the gastric juices, which can damage the lining of the intestine, resulting in duodenal ulcer . Other secretions from the pancreas, gallbladder, liver, and glands in the intestinal wall help in digestion . </P> <P> When food particles are sufficiently reduced in size and composition, they are absorbed by the intestinal wall and transported to the bloodstream . Some food material is passed from the small intestine to the large intestine . In the large intestine, bacteria break down proteins and starches in chyme that were not digested fully in the small intestine . </P>

Which of these is the semifluid mass of partly digested food that passes out of the stomach