Question #217
Considering the mediastina, which of the following statements are true?
The mediastinum extends from the thoracic inlet down to the diaphragm – this is as far down as T12 posteiorly. It is divided into superior and inferior by a line between the manubriosternal joint (the angle of Louis) and the T4/5 disc. The inferior mediastinum is further divided into anterior, middle and posterior.
The thymus regresses during childhood until only a remnant can be found in the superior and anterior mediastina.