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.

Ivan Pavlov

Ivan Pavlov

Also Always Appetite Been Conclude Digestion Essentially Food Hungry Known Lack Linked Long Makes Man Might Mouth Phenomenon Process Regarded Sight Sure Tasty Undesirable Water Which

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Appetite, craving for food, is a constant and powerful stimulator of the gastric glands.

— Ivan Pavlov

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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.

— Ivan Pavlov

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Only by observing this condition would the results of our work be regarded as fully conclusive and as having elucidated the normal course of the phenomena.

— Ivan Pavlov

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Thanks to our present surgical methods in physiology we can demonstrate at any time almost all phenomena of digestion without the loss of even a single drop of blood, without a single scream from the animal undergoing the experiment.

— Ivan Pavlov

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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.

— Ivan Pavlov

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