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A costal facet is: a site of connection between a rib and a vertebra. The costal facets are located on the "vertebrae that the rib articulates with." They are the superior costal facet, the inferior costal facet, and the transverse costal facet. Rib 1 only articulates with a transverse costal facet.
The superior costal facet joins the rib to the top of a vertebra. The transverse costal facet joins the rib to the transverse process of a vertebra. And the inferior costal facet joins the rib to the lower part of the vertebra. The joints formed are known as the costovertebral joints.
References※
- ^ "7.4 The Thoracic Cage – Anatomy and Physiology". opentextbc.ca.
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