. Principles of modern biology. Biology. Fig. 16-20. Showing an esophageal fistula, used in "sham feeding" experiments. (From The Living Body, by Best and Taylor. Holt, Rinehart and Winston, Inc.) involving other receptors of smell and sight, etc., as substitutes for the taste buds. Isolating a small part of the stomach, called the Pavlov pouch (Fig. 16-21), and leading this pouch to the external surface of the abdominal wall permitted Pavlov to observe the flow of gastric juice under a variety of conditions. Introducing food directly into the stomach—without allowing the animal to t
. Principles of modern biology. Biology. Fig. 16-20. Showing an esophageal fistula, used in "sham feeding" experiments. (From The Living Body, by Best and Taylor. Holt, Rinehart and Winston, Inc.) involving other receptors of smell and sight, etc., as substitutes for the taste buds. Isolating a small part of the stomach, called the Pavlov pouch (Fig. 16-21), and leading this pouch to the external surface of the abdominal wall permitted Pavlov to observe the flow of gastric juice under a variety of conditions. Introducing food directly into the stomach—without allowing the animal to taste, smell, or see the food—calls forth almost three-quarters of the total normal pro- duction of the juice. This flow, which results from the mere presence of food in the stom- Fig. 16-21. Upper drawings show Pavlov's method of fashioning a gastric pouch, or miniature stomach. A horizontal incision (A-B) is made, which causes minimal in- jury to the gastric nerve and blood supply. (D) vagus nerves. The flap (C) is turned down and the pouch (S) isolated (by sutures) from the main cavity of the stomach (V) as shown in the right-hand sketch. (A) abdominal wall. The lower drawing illustrates the manner in which pure gastric juice can be collected from the miniature stomach while digestion is proceeding in the main part of the stomach. (From The Living Body, by Best and Taylor. Holt, Rinehart and Winston, Inc.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marsland, Douglas, 1899-. New York, Holt, Rinehart and Winston
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectbiology
