chyme

chymous, adj.
/kuym/, n.
the semifluid mass into which food is converted by gastric secretion and which passes from the stomach into the small intestine.
[1600-10; < L chymus < Gk chymós juice, akin to chylós CHYLE]

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Thick semifluid mass of partly digested food and secretions, formed in the stomach and intestines during digestion.

Its composition changes as various digestive juices and cellular debris and other waste products are added, and water and nutrients are absorbed from it during its passage through the digestive tract, at the end of which it is stored for excretion.

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      a thick semifluid mass of partially digested food and digestive secretions that is formed in the stomach and intestine during digestion. In the stomach, digestive juices are formed by the gastric glands; these secretions include the enzyme pepsin, which breaks down proteins, and hydrochloric acid. Once food is in the small intestine, it stimulates the pancreas to release fluid containing a high concentration of bicarbonate. This fluid neutralizes the highly acidic gastric juice, which would otherwise damage the membrane lining of the intestine, resulting in a duodenal ulcer. Other secretions from the pancreas, gallbladder, liver, and glands in the intestinal wall add to the total volume of chyme.

      Muscular contractions of the stomach walls help to mix food and digestive substances together in forming chyme. As particles of food become small enough, they are passed at regular intervals into the small intestine. Once in the intestine, more enzymes are added and mixing continues. 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, or colon. In the colon, chyme is acted upon by bacteria that break down the proteins, starches, and some plant fibres not totally digested by the other organs. In both the small and the large intestine, water is normally absorbed so the chyme gradually gets thicker. As chyme passes through the stomach and intestine, it picks up cellular debris and other types of waste products. When all of the nutrients have been absorbed from chyme, the remaining waste material passes to the end of the large intestine, the sigmoid colon and rectum, to be stored as fecal matter (feces) until it is ready to be excreted from the body.

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Universalium. 2010.

Look at other dictionaries:

  • chyme — [ ʃim ] n. m. • XVe; lat. méd. chymus, gr. khumos « humeur » ♦ Physiol. Bouillie formée par la masse alimentaire au moment où elle passe dans l intestin après avoir subi l action de la salive et du suc gastrique. « tous ces cachets fuseront dans… …   Encyclopédie Universelle

  • chyme — chyme; coe·nen·chyme; col·len·chyme; des·ma·chyme; en·chyme; mes·en·chyme; scle·ren·chyme; par·en·chyme; …   English syllables

  • Chyme — Chyme, n. [L. chymus chyle, Gr. ? juice, like ?, fr. ? to pour: cf. F. chyme. See {Chyle}.] (Physiol.) The pulpy mass of semi digested food in the small intestines just after its passage from the stomach. It is separated in the intestines into… …   The Collaborative International Dictionary of English

  • chyme — early 15c., bodily fluid; c.1600 in specific sense of mass of semi liquid food in the stomach, from L. chymus, from Gk. khymos, nearly identical to khylos (see CHYLE (Cf. chyle)) and meaning essentially the same thing. Differentiated by Galen,… …   Etymology dictionary

  • chyme — ► NOUN Physiology ▪ the fluid which passes from the stomach to the small intestine, consisting of gastric juices and partly digested food. ORIGIN Greek kh mos juice …   English terms dictionary

  • chyme — [kīm] n. [LL chymus < Gr chymos, juice < cheein: see CHYLE] the thick, semifluid mass resulting from gastric digestion of food: it passes from the stomach into the small intestine, where the chyle is formed from it chymous [kī′məs] adj …   English World dictionary

  • Chyme — Not to be confused with chymex or chime. Chyme (from Greek χυμός khymos, juice [1][2]) is the semifluid mass of partly digested food expelled by the stomach into the duodenum.[3] Also known as chymus, it is the liquid substance found in the… …   Wikipedia

  • Chyme — Le chyme (prononcer chime [ʃim]) est la substance liquide que l on trouve dans l estomac avant le passage de la valve du pylore et l entrée du duodénum. Il consiste en de la nourriture partiellement digérée, de l eau, de l acide chlorhydrique, et …   Wikipédia en Français

  • chyme —   n. semi liquid partly digested food leaving stomach.    ♦ chymiferous, a. containing chyme.    ♦ chymiflcation, n. conversion of food into chyme.    ♦ chymous, a …   Dictionary of difficult words

  • Chyme — A pre digested, acidified mass of food that passes from the stomach into the small intestine. * * * The semifluid mass of partly digested food passed from the stomach into the duodenum. SYN: pulp (3) [TA], chymus. [G. chymos, juice] * * * chyme… …   Medical dictionary

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