Articular processes4/2/2023 This means that the rib will articulate with the inferior costal facet of the upper vertebrae and the superior costal facet of the lower vertebrae. Each vertebra therefore has a pair of superior articular facets that face posteriorly and a pair of inferior articulating facets that face anteriorly (except for T12). Ribs are generally inserted between two vertebrae, such that each vertebra contributes to articulating with half of the articular surface. The body also has small, smooth, and somewhat concave costal facets for the attachment of the ribs. The body of a thoracic vertebra is somewhat “heart-shaped,” and is larger than the cervical but smaller than the lumbar vertebrae in size. In addition, the spinous processes are relatively more pointed than other vertebrae, and angle sharply downward. Distinguishing featuresĭistinguishing features of the thoracic vertebrae include the presence of facets on the sides of the bodies for articulation with the heads of the ribs, and facets on the transverse processes of all, except the 11th and 12th vertebrae, for articulation with the tubercles of the ribs. Now you know the bones of the thoracic vertebrae - but what about the other regions of the body? Use our skeletal system quizzes and free worksheets to learn all the bones quickly and easily.
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |