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Updated: June 29, 2025
After the stomach is through churning, the partially digested food is moved into the small intestine where it is mixed with more pancreatin secreted by the pancreas, and with bile from the gall bladder. Pancreatin further solubilizes proteins. Bile aids in the digestion of fatty foods. Manufacturing bile and pancreatic enzymes is also a lot of effort.
In fact, it is the most powerful digestive gland in the body. Its juice, the pancreatic juice, can do everything that any other digestive juice can, and do it better. What does this great combination of powers in the pancreas mean? It means that we have now reached the real centre and chief seat of digestion, namely, the small intestine, or upper bowel.
These effects, however, merely show that the secreted fluid is highly injurious or poisonous to leaves; for nearly the same effects were produced in from one to two days on various kinds of young leaves, not only by artificial pancreatic fluid, prepared with or without thymol, but quickly by a solution of thymol by itself.
Pancreatic juice emulsifies fat, and we have just seen how greedily worms devour fat; it dissolves fibrin, and worms eat raw meat; it converts starch into grape-sugar with wonderful rapidity, and we shall presently show that the digestive fluid of worms acts on starch.
On one occasion leaves of Corylus were much discoloured by being kept for eighteen hours in pancreatic fluid, without any thymol. With young and tender leaves immersion in human saliva during rather warm weather, acted in the same manner as the pancreatic fluid, but not so quickly. The leaves in all these cases often became infiltrated with the fluid.
Nature of the sites inhabited Can live long under water Nocturnal Wander about at night Often lie close to the mouths of their burrows, and are thus destroyed in large numbers by birds Structure Do not possess eyes, but can distinguish between light and darkness Retreat rapidly when brightly illuminated, not by a reflex action Power of attention Sensitive to heat and cold Completely deaf Sensitive to vibrations and to touch Feeble power of smell Taste Mental qualities Nature of food Omnivorous Digestion Leaves before being swallowed, moistened with a fluid of the nature of the pancreatic secretion Extra-stomachal digestion Calciferous glands, structure of Calcareous concretions formed in the anterior pair of glands The calcareous matter primarily an excretion, but secondarily serves to neutralise the acids generated during the digestive process.
The Pancreas. Lieutaud has seen the pancreas missing and speaks of a double pancreatic duct that he found in a man who died from starvation; Bonet speaks of a case similar to this last. There are several cases of complete transposition of the viscera on record.
Just what becomes of the sugar beyond the fact of its disappearance before it can get into the general circulation and sweeten our tempers, it is hard to say. The pancreatic fluid makes an emulsion of the fat contained in our food, but just how the fatty particles get into the villi we must leave Brucke and Kolliker to settle if they can.
The walls of the stomach are muscular, and their contraction churns the food with the juice. The gastric juice is secreted by glands embedded in the walls of the stomach, and is poured out when food is taken. The pancreatic juice acts upon the starch which has escaped the action of the saliva, and also continues the work of the stomach.
Just what becomes of the sugar beyond the fact of its disappearance before it can get into the general circulation and sweeten our tempers, it is hard to say. The pancreatic fluid makes an emulsion of the fat contained in our food, but just how the fatty particles get into the villi we must leave Brucke and Kolliker to settle if they can.
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