The laws and mechanics of circulation, with the principle involved in animal movement . the incurvated surface of thediaphragm instead by duplicatures of the lining membrane;while the stomach itself, now widely expanded, is in easy con-tact with it simply, and free to move in the visceral cavity, thatit may function both as a receptacle for the food and at thesame time effect digestive action in it; and that the intestines, FLOOR OF SUPPORT TO THE VISCERA. 85 also greatly increased in size, are not now resting upon theliver and stomach as the floor of support (Fig. 22, c, c, B, A),but occupy a
The laws and mechanics of circulation, with the principle involved in animal movement . the incurvated surface of thediaphragm instead by duplicatures of the lining membrane;while the stomach itself, now widely expanded, is in easy con-tact with it simply, and free to move in the visceral cavity, thatit may function both as a receptacle for the food and at thesame time effect digestive action in it; and that the intestines, FLOOR OF SUPPORT TO THE VISCERA. 85 also greatly increased in size, are not now resting upon theliver and stomach as the floor of support (Fig. 22, c, c, B, A),but occupy a position posteriorly and resting against the mus-cular floor itself, in easy contact with them (Fig. 25, i, C—E,S, L); at the same time, are also free to move within thecavity in connection with respiration and the special functionsin the organs ; while they are retained in their relative positionsby means of duplicatures of the lining membrane, forming thegastric, meso-colic and mesenteric ligaments. From this rela-tion of the parts, it follows that the viscera are compelled to. Fig. 25.—Diagrammatic Longitudinal Section of the Abdomen in the Horse, showing theposition of the Viscera, and the relations they sustain to the lower abdominal walls,or floor of support. E, abdominal walls ; S, stomach ; L, liver ; O, omentum ; C,colon ; M, mesentery ; I, small intestines ; Q, duodenum ; P, pancreas ; B, bladder ;V, vagina ; B, rectum ; d, diaphragm ; k, oesophagus ; A, aorta. respond to every movement in the muscular walls. It couldnot be otherwise, in the very nature of things. Thus, duringinspiration, when the muscles expand, the viscera sink down,so to speak, with the walls ; but when contraction sets in dur-ing expiration, they rise again with them, in this manner effect-ing a to-and-fro movement of the viscera in the chest-excavationduring respiration for producing the rhythmical changes ofpressure in the lungs ; while the large apron-like duplicaturesof the lining membran
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Keywords: ., bookcentury1800, bookde, booksubjectblood, booksubjectrespiration
