Manual of general, descriptive, and pathological anatomy (Volume 2).

  • Meckel, J. F. (Johann Friedrich), 1781-1833.
Date:
1832
Catalogue details

Licence: Public Domain Mark

Credit: Manual of general, descriptive, and pathological anatomy (Volume 2). Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    B. LIGAMENTS OF THE TUBERCLE, AND THE EXTERNAL TRANSVERSE LIGA- MENTS OF THE RIBS. § 835. Short synovial capsules arise from the anterior face of the summits of the transverse processes of the dorsal vertebrae, and go to the circumference of the articular surface of the tubercles. These capsules are looser in the lower than in the upper ribs. The quadrangular ligaments (ligamenla Iransversaria costarum externa) are situated on them posteriorly, and proceed from the summits of the transverse processes of the vertebras: they are formed of very strong, more or less transverse fibres. These ligaments are narrower from above downward than from without inward, and are longer in the inferior than in the superior vertebrae. Their fibres descend to the upper and ascend to the lower ribs, from the transverse processes of the vertebrse. They serve to strengthen the articulations of the ribs with the vertebrae. C. INTERNAL LIGAMENTS OF THE NECKS OF THE RIBS. § 836. The internal ligaments of the necks of the ribs, or the in- ternal transverse ligaments (Lig. cervicis costarum interna s. irans- versaria interna) do not extend, like the former, from the vertebras to the ribs, which are articulated with them ; but from the inferior edge of the transverse process of the vertebra above, to the neck of the rib below. They are formed of fibres, which proceed obliquely from above downward, and from without inward. Their form is rhomboidal, and they are thinner and more feeble than the former. D. EXTERNAL LIGAMENTS OF THE NECKS OF THE RIBS. § 837. The external ligaments of the necks of the ribs {Lig. costarum cervicis externa) are situated opposite the internal, and are composed of fibres which proceed in an opposite direction, and also extend from the transverse processes of the vertebrae to the necks of the ribs next below. They are scarcely apparent, or in fact do not exist, between the two upper and the two lower ribs. E. ACCESSORY LIAGMENTS OF THE RIBS. § 838. The accessory ligaments of the ribs (Lig. accessoria cos- tarum) are rounded bands situated beyond the articular heads, which, descend from the transverse processes of the vertebrae to the posterior extremities of the bodies of the ribs. II. COSTO-STERNAL LIGAMENTS. §. 839. The ribs unite to the sternum by the costal cartilages, in part directly, in part indirectly.