File:Anatomy of the cat (1991) (18195144591).jpg

Title: Anatomy of the cat
Identifier: anatomyofcatrje00reig (find matches)
Year: 1991 (1990s)
Authors: Reighard, Jacob Ellsworth, 1861-1942; Jennings, H. S. (Herbert Spencer), 1868-1947
Subjects: Cats; Mammals
Publisher: (Austin, TX) : BookLab, Inc.
Contributing Library: American Museum of Natural History Library
Digitizing Sponsor: Biodiversity Heritage Library

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RIBS. 19 on the lateral surface is an elevated area, the tubercle, marked by the smooth tubercular facet (c) for articulation with the transverse process of a vertebra. The constricted portion between the head and tubercle is known as the neck (collum) (d). The angle is marked by a projecting process (e) (angular process) on its lateral bor- der, for attachment of a ligament. The ribs increase in length to the ninth (the ninth and tenth arc of the same length) and then de- crease to the last. They decrease in breadth behind the fifth. The first is nearly in a dorsoventral plane, while the others have their dorsal ends inclined slightly craniad. The tubercles become less promi- nent as we pass caudad and are absent on the last two or three ribs, which do not articulate with the transverse Fig. 15.—Fifth Rib of Left piocess. Side, Cranial View. The first nine ribs (true ribs or «, head; d, tubercle; c, tuber- costae verae)are attached separately wtth\tg?ii/proSs';/, ""c^^^^^^^ to the sternum by their costal carti- ^^g^- lages. The last four (false ribs or costze spuria^) are not attached separately to the sternum. The costal cartilages of the tenth, eleventh, and twelfth are united to one another at their sternal ends. They may be united also to the ninth costal cartilage or to the sternum by a common cartilage of insertion, or they may be quite free from the sternum. The thirteenth costal cartilages are free (floating ribs). Ligaments of the Ribs.—The articular surfaces between the head of the rib and the centra, and between the tubercle and the transverse process of the vertebra, have each an articular capsule. There are also a number of small liga- mentous bands from the tuberosity and the neck of the rib to the transverse process of the vertebra.
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