Lab 9 - Image 1

Comparative thoracic osteology. The horse has more ribs but they are thinner. The last rib (1) is shorter in the horse but the 13th rib of the horse (2) is similar in length to the bovine 13th rib (1). The costal arch (3) is much longer and more slanted in the horse. The bovine thorax is deeper than that of the horse and therefore the bovine sternum (5) is ventral to the olecranon (4). The cranial part of the bovine sternum forms the brisket (6).