. Anatomy, descriptive and applied. Anatomy. VERSE LIG INTER! VERSE LIGAMENT ARTICULATIONS OF THE BIBS WITH THE VERTEBRA 285 section should be made across the transverse process and corresponding part of the rib; or the rib may be forcibly separated from the transverse process and the fibres of tlie ligament put on the stretch. For the eleventh and twelfth ribs this ligament is quite rudimentary or wanting. The posterior costotransverse ligament (ligamentum costotransversarmm pos- ierius) (Fig. 234) is a short but thick and strong fasciculus which passes obliquely from the summit of the transv
. Anatomy, descriptive and applied. Anatomy. VERSE LIG INTER! VERSE LIGAMENT ARTICULATIONS OF THE BIBS WITH THE VERTEBRA 285 section should be made across the transverse process and corresponding part of the rib; or the rib may be forcibly separated from the transverse process and the fibres of tlie ligament put on the stretch. For the eleventh and twelfth ribs this ligament is quite rudimentary or wanting. The posterior costotransverse ligament (ligamentum costotransversarmm pos- ierius) (Fig. 234) is a short but thick and strong fasciculus which passes obliquely from the summit of the transverse process to the rough nonarticular portion of the tubercle of the rib. This ligament is shorter ^\o. and more oblique in the upper than in the lower ribs. Those correspon- ding to the superior ribs ascend, while those of the inferior ribs descend slightly. For the eleventh and twelfth ribs this ligament is M-anting. The capsular liga- ment (capsula artic'ular- is) is a thin, membranous sac attached to the cir- cimiference of the articu- lar surfaces, and enclos- inga syno\-ial membrane. For the eleventh and twelfth ribs this ligament is absent. Movements.~The heads of the ribs are so closely connected to the bodies of the vertebrae by the stellate and intra-articular hgaments, and the necks and tubercles of the ribs to the transverse Fig. 235.—Ribs and corresponding -vertebra; with ligaments, processes, that only a slight ^^^ "sht. (Spaltehoh.) gliding movement of the ar- ticular surfaces on each other can take place in these articulations. The result of this gliding movement with respect to the six upper ribs consists in, an elevation of the front and middle portion of the rib with a consequent enlargement of the antero-posterior diameter of the thorax, the hinder part being prevented from performing any upward movement by its close connection with the vertebral column. In this gliding movement the rib rotates on an axis corresponding to a line drawn through the two
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1913
