The physiology and hygiene of the house in which we live . nto the blood, whereit can nourish and supply thebodys waste. Peptone is an hydra-tion of the albumen, prepared,by the pepsin of the stomach.*Thus peptonized, as we say, assimi-lation can now go on by absorptionof the albuminoids which have beenpeptonized, which pass as peptonesdirectly into the lacteals located inthe walls of the stomach. The ex-act work done by the stomach wasfor a long time a mystery to thechemist; some esteeming it, as Hun-ter says, a cooking pot, others amill, a churn, etc., until very recently the exact chemicalc
The physiology and hygiene of the house in which we live . nto the blood, whereit can nourish and supply thebodys waste. Peptone is an hydra-tion of the albumen, prepared,by the pepsin of the stomach.*Thus peptonized, as we say, assimi-lation can now go on by absorptionof the albuminoids which have beenpeptonized, which pass as peptonesdirectly into the lacteals located inthe walls of the stomach. The ex-act work done by the stomach wasfor a long time a mystery to thechemist; some esteeming it, as Hun-ter says, a cooking pot, others amill, a churn, etc., until very recently the exact chemicalchange occurring there is found to be simply the additionof water to the albuminoids of the food—not a mixturewith water, for that takes place in the mouth; but achemical union, or hydration, forming the peptones alreadydescribed. But all of our food is not albuminoid, and hence notdigested in the stomach, whose fluids are only able to pep-tonize the nitrogenous foods. t The starches have partlybeen acted upon by the saliva in the mouth, and this trans-. Peptic Glands. A, Under a low power; d, duct; n, neck.—Klein. DlNING-RoOM AND SCULLIONS. 81 formation into glucose is further continued in the acid fluidsof the stomach, while the remainder of the food is in from twoto six hours converted into a thick fluid, consisting of solid, un-digested particles, suspended in a yellowish, disagreeably smell-ing liquid. This mixture is known as chyme, and is food nowprepared for further digestion in the intestinal canal, into whichit passes from the stomach by means of the pylorus, a purse-like mouth which opens when the chyme is ready for intestinaldigestion. When in the intestines it becomes mixed with bile,pancreatic fluid, and the juices from the various intestinalglands. Each of these has some part to perform in perfectdigestion. The bile, for instance, prevents decomposition, andemulsifies the fats, the pancreatic fluid completes the digestionof the fats, and the intestinal fluids
Size: 1030px × 2426px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjecthygiene, booksubjectphysiology, booky
