Côte - Os costale

Description

The rib (os costale in latin) is the bony dorsal part of the whole rib (costa in latin), separate with the ventral cartilagenous part by the costochondral junction.

It is subdivided into :

  • A head with an articular facet
  • A neck
  • A body (shaft) including the tubercle, the costal angle and the knee of the rib

The number of ribs differ between species:

  • Carnivores:12-14 (9 sternal, 4 asternal)
  • Dogs: 13 (9 sternal, 4 asternal)
  • Pigs: 13-16 (7 sternal, 7-8 asternal)
  • Ruminants: 13 (8 sternal, 5 asternal)
  • Horse 18 (8 sternal, 10 asternal)

Text by Antoine Micheau, MD - Copyright IMAIOS

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