Rib - 2
Costa - II
Definition
The second rib is longer than the first. It articulates dorsally with the second thoracic vertebra and ventrally with the body of the sternum. Its shaft is thinner, and its surfaces are less concave and convex than those of the first rib.
References
Barone R. Anatomie comparée des mammifères domestiques, Tome 1, Ostéologie, 5th edition, Vigot, Paris, 2017.
International Committee on Veterinary Gross Anatomical Nomenclature. 2017. Nomina Anatomica Veterinaria. Sixth Edition. Ghent (Belgium).