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Dog · Set · Thorax

The sternebrae

Sternebrae

The row of blocks that makes the floor of the chest. The first and the last are not like the others and have pages of their own; these are the ones in between, each taking a pair of costal cartilages at its joints.

Region
Thorax
Members
8
Own page
2
Named parts
2

How they differ along the set

What changes from one end of the series to the other, which is most of what there is to know about any one of them.

  • The sternum is a row of sternebrae, flattened from above at the front and turned on edge towards the back.Miller 2020, p. 295
  • Short blocks of cartilage, the intersternebral cartilages, join one sternebra to the next.Miller 2020, p. 295
  • The sternal ends of the ribs meet those blocks of cartilage rather than the sternebrae themselves — all but the first pair, which meet the first sternebra directly.Miller 2020, p. 295
  • The first sternebra is longer than the rest, widened in its front half, and carries side projections for the first costal cartilages; it is the manubrium.Miller 2020, p. 295
  • The last is wide and flat, about three times as long as it is broad, and sometimes has an elliptical hole in its back half; it is the xiphoid process.Miller 2020, p. 295
  • The cartilaginous joints between the sternebrae may turn to bone in an old dog.Miller 2020, p. 295

Named parts

What a member of this set carries, and what each part is called in the Nomina Anatomica Veterinaria.

Intersternebral cartilageCartilago intersternebralis
The short block of cartilage between one sternebra and the next, which the costal cartilages meet.Miller 2020, p. 295
Sternal synchondrosesSynchondroses sternales
Those cartilage joints taken together.Miller 2020, p. 295

The members

In order along the set. Any one of them can be singled out in the model above, with the picker beneath it. The ones that are taught by name have a page of their own.

  • ManubriumManubrium sterniFirst sternebra; first costal cartilages articulate with itOwn page
  • Sternebra 2Sternebra II
  • Sternebra 3Sternebra III
  • Sternebra 4Sternebra IV
  • Sternebra 5Sternebra V
  • Sternebra 6Sternebra VI
  • Sternebra 7Sternebra VII
  • Xiphoid processProcessus xiphoideusOwn page

References

Where to read this set in full, and where everything above was read.

  • Miller 2020Miller 2020, ch. 4 The Skeleton, Sternum, PDF p. 294
  • König & Liebich 2020skeleton of the thorax, p. 125
  • Dyce 2017ch. 13 Thorax of the Dog and Cat, p. 403
  • NAV 2017Osteologia
  • Miller 2020Miller 2020, ch. 4 The Skeleton, Sternum, PDF p. 295