Vertebral Body of Twelfth Thoracic Vertebra

Description

The vertebral body is the anteriorly located cylindrical part of the twelfth thoracic vertebra. When viewed from above, it appears heart-shaped. Its anterior aspect is concave, while its posterior aspect, which forms the anterior wall of the vertebral foramen, is flat. It is connected to the vertebral arch via two pedicles, which extend from the upper corners of its posterior aspect. It consists of:

—superior and inferior intervertebral surfaces;

—superior and inferior annular epiphyses;

—vascular foramina;

—a pair of costal facets.

The vertebral body of the twelfth thoracic vertebra provides an origin site for the psoas major and psoas minor muscles, as well as attachment sites for the anterior and posterior longitudinal ligaments, and the radiate ligament of the head of the rib.

Overall, the sizes of the vertebral bodies gradually increase caudally along the vertebral column. Adjacent vertebral bodies articulate with each other via intervertebral discs, forming the intervertebral symphysis joints.

In terms of function, each vertebral body provides structural support to the body weight that lies superior to it.