For example, a structures at the level of the fourth cervical vertebra may be abbreviated as " C4 ", at the level of a thoracic vertebra " T4 ", at the level of a lumbar vertebra " L3 ".
32.
It continues ascending on the left side of the vertebral column, and around the level of the ninth thoracic vertebra, it passes rightward across the column, behind the aorta, esophagus, and thoracic duct, to end in the azygos vein.
33.
The conclusion of bullet entry specifically at the first thoracic vertebra was made in a 1979 report on the Kennedy assassination by the HSCA Forensic Pathology Panel, which created Figure [ 24 ] for their report to demonstrate this entrance location.
34.
It is formed by the union of the ascending lumbar veins with the right subcostal veins at the level of the 12th thoracic vertebra, ascending in the posterior mediastinum, and arching over the right main bronchus posteriorly at the root of the right lung to join the superior vena cava.
35.
The thoracic inlet is bounded by : the first thoracic vertebra ( T1 ) " posteriorly ", the first pair of ribs " laterally " ( more specifically, the first ribs form lateral C-shaped curves posterior to anterior ), the costal cartilage of the first rib and the superior border of the manubrium " anteriorly ".
36.
The American bison has four lumbar vertebrae, while the European has five . ( The difference in this case is that what would be the first lumbar vertebra in wisent has ribs attached to it in American bison and is thus counted as the 15th thoracic vertebra, compared to 14 thoracic vertebrae in wisent . ) Adult American bison are less slim in build and have shorter legs.
