6,273
edits
Changes
→Sternum
===Sternum===
===Sternum===
The sternum represents the bony structure that runs ventrally along the thoracic cavity and provides attachment for the ribs and an anchor for some of the muscles involved in respiration. The sternum is composed of three elements; the '''manubrium''', the '''body''' and the '''xiphoid'''. The '''manubrium''' in canines is rod-shaped and projects cranially to the first rib and unless the dog is particularly well muscles, it can often be palpated at the region of the ventral neck. The body of the sternum is composed of numerous segments interconnected by the costochondral ventral aspects of the ribs (see section above) via small depressions in the segments. These segments are referred to as ''sternebrae'' and are cartilaginous in young canines and ossify with age. The body of the sternum in dogs is generally cylindrical in shape. The '''xiphoid''' cartilage extends caudally in a similar manner to that of the manubrium cranially. It provides attachents for the most cranial aspects of the abdomen and also for the ''linea alba''.
<br />
<br />
<br />
<br />