The thoracic aorta is contained in the posterior mediastinal cavity.
It begins at the lower border of the fourth thoracic vertebra where it is continuous with the aortic arch, and ends in front of the lower border of the twelfth thoracic vertebra, at the aortic hiatus in the diaphragm where it becomes the abdominal aorta.
At its commencement, it is situated on the left of the vertebral column; it approaches the median line as it descends; and, at its termination, lies directly in front of the column.
The vessel describes a curve which is concave forward; as the branches given off from it are small, its diminution in size is insignificant.
It has a radius of approximately 1.16 cm.
Other articles related to "thoracic aorta, aorta":
... Injury of the thoracic aorta refers to any injury which affects the portion of the aorta which lies within the chest cavity ... Injuries of the thoracic aorta are usually the result of physical trauma however, they can also be the result of a pathological process ...
... Thoracic aorta Transverse section of thorax, showing relations of pulmonary artery The arch of the aorta, and its branches ...