Contribution to the topographical anatomy of the thorax in the foetus at term and the new-born child / by George S. Huntington.

  • Huntington, George S. (George Sumner), 1861-1927.
Date:
[1897?]
Catalogue details

Licence: Public Domain Mark

Credit: Contribution to the topographical anatomy of the thorax in the foetus at term and the new-born child / by George S. Huntington. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    limits this pericardial surface of the tuberosity above and in front (Fig. XVII). In other cases the pericardial surface contributed by the inferior lobe is much larger and exceeds the limits of the tuberosity. The interlobar incisure then passes upward and backward more vertically from the ante- rior part of the mediastino-phrenic border, and reaches the hilus nearly at the middle of its anterior margin (Fig. XV). In such a case the pericar- dial surface of the tuberosity is continuous with the general pericardial surface of the inferior lobe, constituting the posterior inferior segment of the same. The posterior, or oesophageal, surface of the tuberosity (XV, XVII, 9) looks backward and inward, and rests upon the pleura covering the por- tion of the oesophagus which appears between aorta, pericardium, and diaphragm. The surface is triangular, with a broad posterior vertical base. The lateral borders are formed below by the postero-internal part of the sharp mediastino-phrenic margin of the lung, and above and in front by the ridge above described as proceeding from the lower angle of the hilus. This ridge separates the pericardial from the oesophageal surface, and cor- responds to the depression between pericardium and oesophagus. The pericardio-cesophageal tuberosity of the left lung evidently corres- ponds to the elevated ridge of lung tissue which, on the right side, fits into the narrow interval between oesophagus behind and the inferior vena cava in front. The attachment of the broad ligament is dorsal to the oesophageal sur- face of the tuberosity, the layers descending almost vertically from the lower angle of the hilus. At the attachment of the ligament to the lung, or just anterior to this line, a sharp vertical ridge is frequently observed which fits into the depression between aorta and oesophagus. In well-hardened lungs a vertical linear impression, descending over the costovertebral surface, indicates the relation to the sympathetic strand and the line of the costal capitula. The relation of the thoracic duct to the mediastinal pleura has not been determined in the above preparations, as the demonstration of the same would produce too much disturbance in the arrangement of the remaining structures. With this exception the above account is believed to present the main relations of the lungs and mediastinal contents correctly. III. Thymus Gland. (Figs. XVIII, XXIV, XXVI, XXVII, XXVIII, XXXI, XXXII, XXXIII.) The gland, situated partly within the thorax, partly in the anterior cervical region, is placed in front of the pericardium and the beginning and termination of the large vessels, accurately adapting itself to the struc- tures with which it comes into contact.