Quote

The digestive canal represents a tube passing through the entire organism and communicating with the external world, i.e. as it were the external surface of the body, but turned inwards and thus hidden in the organism.

Ivan Pavlov

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Ivan Pavlov
Age: 87 †
Born: 1849
Born: January 1
Died: 1936
Died: January 1
Chemist
Neurologist
Physician
Physiologist
Pavlov Ivan
Ivan Petrovich Pavlov
Entire
External
Canal
Body
Passings
Canals
World
Hidden
Tube
Passing
Tubes
Communicate
Communicating
Surface
Organism
Thus
Organisms
Digestive
Turned
Represents
Inwards

More quotes by Ivan Pavlov

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Mankind will possess incalculable advantages and extraordinary control over human behavior when the scientific investigator will be able to subject his fellow men to the same external analysis he would employ for any natural object, and when the human mind will contemplate itself not from within but from without.
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From the described experiment it is clear that the mere act of eating, the food even not reaching the stomach, determines the stimulation of the gastric glands.
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Perfect as the wing of a bird may be, it will never enable the bird to fly.
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School yourself to demureness and patience. Learn to inure yourself to drudgery in science. Learn, compare, collect the facts.
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It goes without saying that the desire to accomplish the task with more confidence, to avoid wasting time and labour, and to spare our experimental animals as much as possible, made us strictly observe all the precautions taken by surgeons in respect to their patients.
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Edible substances evoke the secretion of thick, concentrated saliva. Why? The answer, obviously, is that this enables the mass of food to pass smoothly through the tube leading from the mouth into the stomach.
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In the case of the stomach, however, the nerves of the glandular cells were always severed when constructing an artificially isolated pouch and this, naturally, affected the normal work of the stomach.
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As was to be expected, the discovery of the nervous apparatus of the salivary glands immediately impelled physiologists to seek a similar apparatus in other glands lying deeper in the digestive canal.
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Perfect as the wing of a bird may be, it will never enable the bird to fly if unsupported by the air. Facts are the air of science. Without them a man of science can never rise.
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It has long been known for sure that the sight of tasty food makes a hungry man's mouth water also lack of appetite has always been regarded as an undesirable phenomenon, from which one might conclude that appetite is essentially linked with the process of digestion.
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While you are experimenting, do not remain content with the surface of things.
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The Sun-Paul must consider only one thing: what is the relation of this or that external reaction of the animal to the phenomena of the external world?
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Learn, compare, collect the facts!
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Physiology has, at last, gained control over the nerves which stimulate the gastric glands and the pancreas.
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Learn the ABC of science before you try to ascend to its summit.
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Possibilities are like the wings of birds they allow man to soar and to climb to the heavens. And facts are like the atmosphere against which those wings must beat, and without which the soaring bird will surely plummet back to earth.
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Men are apt to be much more influenced by words than by the actual facts of the surrounding reality
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Don't become a mere recorder of facts, but try to penetrate the mystery of their origin.
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Science demands from a man all his life. If you had two lives that would not be enough for you. Be passionate in your work and in your searching.
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It is not accidental that all phenomena of human life are dominated by the search for daily bread - the oldest link connecting all living things, man included, with the surrounding nature.
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