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. 1905 Excerpt: ...tissue of the neck and furnishes a path along which inflammations (suppurations, abscesses) may easily extend from the neck into the mediastinum through the superior aperture of the thorax. The chief contents of the mediastinum may be seen through the mediastinal pleura after the removal of the lungs, if the membrane retains its normal transparency and has not become opaque and thickened by inflammation. The contents become still more distinct if the two mediastinal layers are removed. Upon the right side may be seen: portions of the heart through the pericardium (during childhood, at least), the superior vena cava, the phrenic nerve (upon the superior vena cava and running upon the pericardium to the diaphragm), the comes nervi phrenici, the vena azygos major and its termination in the superior vena cava, the right intercostal vessels, the esophagus, the vagus nerve, the right sympathetic and splanchnic nerves, and the lymphatic glands at the root of the lung. Upon the lefl side the visible structures are: the heart with the left phrenic nerve, the comes nervi phrenici, the descending aorta, the left subclavian artery, the left internal mammary artery, the left innominate vein receiving the termination of the vena azygos minor,! the vagus nerve, the left sympathetic nerve, the left intercostal vessels, and numerous lymphatic glands. In children the thymus gland may be seen from either side; it is situated in front of and above the heart. Erroneously designated as V. Cava sup. in the plate. t In Plate 8, a, the vena azygos minor (vena hemiazygos) joins a very large superior intercostal vein (see page 117). Pneumogastric n. Sympathetic n. Vena azygos minor ntercostal aa. Esophagus Descending aorta BupOM vena cava Thymus Riht phrenic n. Mediastinum Eparterial...
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