What is the vertebrae associated with ribs called?

The vertebrae associated with ribs are known as the thoracic vertebrae. This region of the spine consists of twelve vertebrae, designated as T1 through T12, and is unique because each of these vertebrae has direct articulations with the ribs. The structure of thoracic vertebrae includes facets that allow for rib attachment, providing stability and support to the upper body while also facilitating the expansion and contraction of the thoracic cavity during breathing.

In contrast, lumbar vertebrae, which are located in the lower back, do not have any rib connections. Cervical vertebrae are found in the neck and also lack rib connections, while sacral vertebrae, which form the back part of the pelvis, serve a different function entirely, connecting the spine to the pelvis. Understanding these distinctions is crucial for comprehending the skeletal structure and its functions in animals.