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The villi are structures especially adapted to the work of absorption, and they are found only in the small intestine. The mucous membrane in all parts of the canal, however, is capable of taking up some of the digested materials. Villi. 2. Small glands, called crypts. Small artery. 2. Lacteal. 3. Villus showing termination of the lacteal. 4. Villus showing capillaries. 5.
These lacteal vessels have mouths, which are irritated into action by the stimulus of the fluid, which surrounds them; and by animal selection, or appetency, they absorb such part of the fluid as is agreeable to their palate; those parts, for instance, which are already converted into chyle, before they have time to undergo another change by a vinous or acetous fermentation.
At the last reports she had a moderate but regular secretion of milk in her eighty-first year. In regard to profuse lacteal flow, Remy is quoted as having seen a young woman in Japan from whom was taken 12 1/2 pints of milk each day, which is possibly one of the most extreme instance of continued galactorrhea on record.
Each villus contains a loop of blood-vessels, and another vessel, the lacteal, so called from the Latin word lac, milk, because of the milky appearance of the fluid it contains. The villi are adapted especially for the absorption of fat. They dip like the tiniest fingers into the chyle, and the minute particles of fat pass through their cellular covering and gain entrance to the lacteals.
No most likely you are a miserable town-bred reader, who think of cream as a thinnish white fluid, delivered in infinitesimal pennyworths down area steps; or perhaps, from a presentiment of calves' brains, you refrain from any lacteal addition, and rasp your tongue with unmitigated bohea.
To the first it is presented in the form of simple milk, or "lacteal fluid;" to the second in the "white" of the egg; while the young tree or plant, springing from its embryo, finds it in the farina, or succulent matter, with which it is surrounded, and in which it has hitherto lain embedded and apparently lifeless, till the nursing sun calls it into a growing existence.
First, the contents of the stomach were emitted, then of the duodenum, gall-bladder, and pancreas, by vomiting. After this the contents of the lower bowels, then the chyle, that was in the lacteal vessels, and in the receptacle of chyle, was regurgitated into the intestines by a retrograde motion of these vessels.
The reason, I imagine, why this chyle-making, or saccharine process, has not yet been imitated by chemical operations, is owing to the materials being in such a situation in respect to warmth, moisture, and motion; that they will immediately change into the vinous or acetous fermentation; except the new sugar be absorbed by the numerous lacteal or lymphatic vessels, as soon as it is produced; which is not easy to imitate in the laboratory.
Jason Grimes that more of his valuable time should be devoted to providing for the wants of his family, and less to leading the discussion on the condition of the country in the free parliament that met around the stove in the corner grocery, had carried forward this lacteal fermentation until it had converted the milky fluid into a vinegarish whey.
Some it sends to the blood, some to the lymphatic vessels, some to the lacteal vessels of the mesentery, and some down to the intestines. Then the chyle, conveyed through the thoracic duct from its cistern in the mesentery, is carried to the vena cava, and so to the heart.
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