Anatomy, Descriptive and Applied Volume 1
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) ... Show synopsis This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1913 edition. Excerpt: ...border is oval and articulates with the manubrium, the junction of the two forming the sternal angle (angulus Ludovici2). The inferior border is narrow, and articulates with the xiphoid process. Each lateral border (Fig. 2ol), at its superior angle, has a small facet, which with a similar facet on the manubrium, forms a cavity for the cartilage of the second rib; below this are four angular depressions which receive the cartilages of the third, fourth, fifth, and sixth ribs, while the inferior angle has a small facet, which, with a corresponding one on the xiphoid process, forms a notch for the cartilage of the seventh rib. These articular depressions are separated by a series of curved interarticular intervals, which diminish in length from above downward, and correspond to i I'aterson (The Human Sternum, 1904), who examined 524 specimens, points out that these ridges are altogether absent in 26.7 per cent; that in 09 per cent, a ridge exists opposite the third costal attachment; iu 39 per cent, opposite the fourth; and in 4 per cent, only, opposite the fifth. 2 Named after the French surgeon Antoine Louis, 1723-1792. The Latin name angulus Ludovici is not infrequently mistranslated into English as "the angle of Ludwig." the intercostal spaces. Most of the cartilages belonging to the true ribs, as will be seen from the foregoing description, articulate with the sternum at the lines of junction of its primitive component segments. This is well seen in many of the lower animals, where the parts of the bone remain ununited longer than in man. Xiphoid Process (processus xiphoideus; ensiform or xiphoid appendix).--The xiphoid process is the smallest of the three pieces: it is thin and elongated, cartilaginous in structure in youth, ...
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