Mediastinum.ppt

文档介绍：Mediastinum
Overview
The mediastinum is the area between the two pleural cavities.
It is divided into the superior mediastinum above vetebral level T4 and, below this, the anterior mediastinum (in front of the pericardial cavity), middle mediastinum (pericardial cavity and contents) and posterior mediastinum (behind pericardial cavity).
Subdivisions of mediastinum, lateral view
Sternal angle
Mediastinum, left side
Mediastinum,
right side
Superior mediastium
Anterior layer: thymus, brachiocephalic veins and superior vena cava;
Middle layer: aortic arch and divisions, phrenic nerve and vagus nerve;
Posterior layer: trachea, esophagus and thoracic duct.
Superior mediastinum-Ⅰ:
superficial dissection, anterior view
Superior mediastinum-Ⅱ:
Root of neck, anterior view
Superior mediastinum-Ⅲ:
Pulmonary arteries