. The anatomy of the horse, a dissection guide. Horses. DISSECTION OF THE BACK AND THOBAX. 103 when taken from its centre than from its sides. It is in consequence of this configuration of the diaphragm that the liver, the stomach, and other abdommal organs lie under cover of the ribs. The vertex of the cone lies in front, and is bounded by the bodj of the 1st dorsal vertebra above, and at the sides by the 1st ribs, which meet below. The trachea, the oesophagus, the blood vessels of the fore limb and head, and many important nerves are transmitted through this opening. On transverse section, t
. The anatomy of the horse, a dissection guide. Horses. DISSECTION OF THE BACK AND THOBAX. 103 when taken from its centre than from its sides. It is in consequence of this configuration of the diaphragm that the liver, the stomach, and other abdommal organs lie under cover of the ribs. The vertex of the cone lies in front, and is bounded by the bodj of the 1st dorsal vertebra above, and at the sides by the 1st ribs, which meet below. The trachea, the oesophagus, the blood vessels of the fore limb and head, and many important nerves are transmitted through this opening. On transverse section, the thorax is not circular, as a cone is, but gives a heart-. FiG. 6. 1, Cliest-wall; 2. Pleural cavity or sac; 3, Lung; 4. Mediastinal pleura (parietal); 5, Oostal pleura (parietal); 6. Pnlnionic pleura (visceral); A. (C) Abdominal cavity; D. (C) Diaphragm ; P. (A) Pericardial sac; R. (A) Root of lung; V. (C) Fold of right pleural membrane enveloping posterior vena cava. The diagrams are intended to show the arrangement of each pleural membrane—A at the level of the heart, B in front of that organ, and C behind it. With tliis object each pleural sac bas been represented as an actual space, although, as explained in the text, the cavity is only a potential one in the normal chest of the live subject. shaped outline. It looks as if it had been squeezed laterally; and it might be described as having a roof, formed by the dorsal vertebrre and the ribs as far as their angles; a floor, much less extensive, formed by the sternum; and lateral toalls, formed by the ribs and intercostal muscles. Contents of the Cavity.—In point of size, the lungs are the most im- portant organs in the thorax, the heart coming next. Besides these,. 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 McFadyean, John, Sir, 1853-. Edinbur
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecthorses, bookyear1902
