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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1893 Excerpt: ...Such outflow is an indispensable preliminary to arterial inflow and to the renewal of local nutrition; the contents of the intercapillary spaces, whatever they may be, are drained inta the portal and lymphatic vessels. Auto-massage superinduced by trunk motions has no special rate; it may, under full occupation in health, average ten per minute. Rhythmic Motions of Respiration.--If an animal at rest be carefully inspected, it will be seen that the respiratory movement includes the abdominal wall, and that the inferior wall of the chest and the anterior of the abdomen act synchronously. The whole mass of the digestive organs is located between these boundaries, and is consequently subjected to the oscillating motions of the respiratory acts and participates in its variations of rate and degree. Since this motion in the human species is approximately perpendicular it follows that it is attended by differences of gravitation, the difference being greatest when gravitation becomes greatest by reason of location; the upward part of the act removes pressure, while the downward part restores pressure to the lower portion of the visceral mass. Whatever circumstances may cause deepening of the respiratory act, extends the effort to the visceral contents in the form of increased difference of pressure; in other words, increased degree of the auto-massage of the abdominal and pelvic viscera. Respiratory auto-massage evidently includes all the hollow organs of the viscera--the stomach and the digestive canal to its inferior termination. It subjects their contents to the motions which tend to urge them on their course of contact with the interior surfaces of the canal. It causes the exterior surfaces of the different segments to glide upon each other. The secreting glan...
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