ClipArt ETC
Portions of four ribs of a dog with the muscles between them. Labels: a, a, ventral ends of the ribs, joining at c the rib cartilages, b, which are fixed to cartilaginous portions, d, of the sternum. A, external intercostal muscle, ceasing between the rib cartilages, where the internal intercostal, B, is seen. Between the middle two ribs the external intercostal muscle has been dissected away, so as to display the internal which was covered by it.

Ribs of a Dog

Portions of four ribs of a dog with the muscles between them. Labels: a, a, ventral ends of the ribs,…