. Operative surgery, for students and practitioners . thatcommences, in front, behind the junction of the sixth costal carti-lage with the sternum; it passes downward and backward, crossingobliquely the cartilage of the seventh rib in the parasternal line andpassing into the seventh intercostal space in the mammary line; stillcontinued downward and backward it reaches its deepest point, cor-responding to the tenth rib or tenth intercostal space, a little behind 204 THORAX. the axillary line, whence it may be traced almost horizontally back-ward and inward to the articulation of the twelfth rib
. Operative surgery, for students and practitioners . thatcommences, in front, behind the junction of the sixth costal carti-lage with the sternum; it passes downward and backward, crossingobliquely the cartilage of the seventh rib in the parasternal line andpassing into the seventh intercostal space in the mammary line; stillcontinued downward and backward it reaches its deepest point, cor-responding to the tenth rib or tenth intercostal space, a little behind 204 THORAX. the axillary line, whence it may be traced almost horizontally back-ward and inward to the articulation of the twelfth rib with thespinal column. Behind, in the scapular line, the lower edge of thepleura corresponds to the tenth intercostal space. It will be observed that the lower edge of the pleura, as it isreflected from the inner surface of the chest wall over on to thesurface of the diaphragm, does not dip down into the bottom of therecess between the costal portion of the diaphragm and the space varies in depth at different parts. Occasionally the lower. Fig. 87.—Section through Seventh, Eighth, and Ninth Ribs Anterior tothe Axillary Line. D, diaphragm; EX, external intercostal muscle; IN, in-ternal intercostal muscle; P, pleura covering inner aspect of the chest wall;PI), pleura that covers the diaphragm; PE, peritoneum that is reflected uponthe under surface of the diaphragm; VAN, intercostal vein, artery, and nervesituated under lower border of the ribs; 7, 8, 9, cut surface of ribs; * repre-sents the space between the diaphragm and chest wall into which the pleuradoes not descend, as it is reflected from the chest wall on to the upper sur-face of the diaphragm. edge of the pleura, behind, reaches down between the twelfth rib andthe diaphragm as far as the lower border of the twelfth rib, or, evenbeyond this, down to the level of the transverse process of the firstlumbar vertebra. The Dome of the pleura is that part of the pleural sac whichprojects upward into the root of the
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Keywords: ., bookcentury1900, bookdecade1900, bookidoperativesur, bookyear1906
