. Quain's elements of anatomy . ic nei-ve ; the rightjmeumogastric nerve is behind the esophagus ; phr, phrenic nerves ; a, aorta ; v a, venjiazygos; d, thoracic duct ; 1, 1, the cardiac pericardium ; 2, in the anterior mediastinalspace, the parietal pericardium ; 2, 2, cavity of the pericardium ; 3, 3, pulmonarypleurte passing over the surface, and reflected at the roots of the lungs, r, r; 3, 3, thepleural cavities, reflected in front at the mediastinum to the surface of the pericardium;4, 4, parietal pleurae; c, c, walls of the chest inclosing the ribs, pectoral muscles, &c. THE PERICAEDIUM
. Quain's elements of anatomy . ic nei-ve ; the rightjmeumogastric nerve is behind the esophagus ; phr, phrenic nerves ; a, aorta ; v a, venjiazygos; d, thoracic duct ; 1, 1, the cardiac pericardium ; 2, in the anterior mediastinalspace, the parietal pericardium ; 2, 2, cavity of the pericardium ; 3, 3, pulmonarypleurte passing over the surface, and reflected at the roots of the lungs, r, r; 3, 3, thepleural cavities, reflected in front at the mediastinum to the surface of the pericardium;4, 4, parietal pleurae; c, c, walls of the chest inclosing the ribs, pectoral muscles, &c. THE PERICAEDIUM. 479 narrower part surrounds the trunks of the great vessels. It consists oftwo layers, one external and fibrous, the other internal and serous. The fibrous layer is a dense, unyielding membrane, consisting offibres which interlace in every direction. This layer is attached below tothe upper surface of the diaphragm (fig. 419, d), partly to the centraltendon, partly to the adjoining muscular surface, especially on the left. Fig. 419.—Semi-diagrammatic view op the pericaedium from behind, desigsned to SHOW THE PRINCIPAL INFLECTIONS OF THE SEROUS SAC ROUND THE GREAT VESSELS (Alien Thomson). ^ The drawing is taken from preparations in which the heart and vessels had beenpartially filled by injection, the pericardium inflated and dried in the distended state, andthe fibrous continuation on the vessels removed. By the removal of a portion of thepericardium from behind the right and left cavities of the heart, the position of thatorgan is made apparent. A, right auricle ; .^1, left auricle ; V, right ventricle ; V, leftventricle; A o, aortic arch; b, innominate artery ; C, vena cava superior ; az, azygosvein ; C, vena cava inferior; c, great coronary vein ; +, cord of the ductus arteriosus ;P, right, P, left pulmonary artery ; ^j, right, _p, left pulmonary veins ; D, central tendonof the diaphragm ; 1, sac of the pericardium ; 2, the portion on the right side whichpartially surrou
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Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
