Mediastinum Definition at Anatomy

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Mediastinum Definition. Mediastinum is a division of the thoracic cavity and contains the heart and its vessels, the esophagus, the trachea, the phrenic and cardiac nerves, the thoracic duct, the thymus. Rotation, incomplete inspiration, or an ap view, may all exaggerate the width of the mediastinum, as well as heart size.

Mediastinum Anatomy Anatomy Drawing Diagram
Mediastinum Anatomy Anatomy Drawing Diagram from

The area between the lungs. It extends from the sternum back to the vertebral column and is bounded by the pericardium and the mediastinal pleurae. The anterior mediastinum is located anterior to a line drawn along the anterior trachea and posterior heart.

Mediastinum Anatomy Anatomy Drawing Diagram

The definition of a widened mediastinum is a measured mediastinal width greater than 6 to 8 cm, depending on which source you use 8). It contains the heart, thymus gland, and part of the esophagus and trachea. The mediastinum is a space in the thorax that contains a group of organs, vessels, nerves, lymphatics and their surrounding connective tissue. The mediastinum contains the heart, aorta, esophagus, thymus, trachea, lymph nodes and nerves.