Which of the following forms Anterior boundary of Middle mediastinum?
BOUNDARIES OF MIDDLE MEDIASTINUM: Anteriorly - sterno-pericardial ligaments Posteriorly - esophagus, descending thoracic aoa, Azygos vein On each side - Mediastinal pleura
Sterno-pericardial ligaments
Oesophagus
Azygos vein
Descending thoracic aoa
Surfaces and Grooves