Final answer:
The superior mediastinum is located above the thoracic inlet and below the superior thoracic aperture in the body. It contains the thymus, trachea, esophagus, and major blood vessels.
Step-by-step explanation:
The location of the superior mediastinum on the body is described as above the thoracic inlet and below the superior thoracic aperture. It is important to note that the mediastinum is the space within the thoracic cavity between the lungs where the heart is located. The superior mediastinum contains important structures such as the thymus, trachea, esophagus, and major blood vessels.