1. Mediastinum and Heart Sanjaya Adikari Department of Anatomy

2. Thoracic cavity Thoracic cavity communicates –with the neck through the superior thoracic aperture –with the abdominal cavity through the inferior thoracic aperture (closed by the diaphragm)

3. What is thoracic outlet syndrome ? Thoracic inlet/ Superior thoracic aperture Inferior thoracic aperture

4. What are the structures that enter or leave the thoracic cavity?

5. Mediatinum Mediastinum is the space between the two lungs It is bounded –superiorly by the superior thoracic aperture –inferiorly by diaphragm –anteriorly by the manubrium and sternum –posteriorly by the vertebral column –laterally by the two lungs

7. Divisions of the mediastinum Name the structures present at the plane passing through sternal angle

8. Superior mediastinum Inferior mediastinum Anterior mediastinum Middle mediastinum Posterior mediastinum

9. Superior mediastinum

11. What are the boundaries? –………………………………………….. What are the contents? –…………………………………………..

12. Anterior mediastinum What are the boundaries? –………………………………………….. What are the contents? –…………………………………………..

13. Middle mediastinum What are the boundaries? –………………………………………….. What are the contents? –…………………………………………..

14. Posterior mediastinum What are the boundaries? –………………………………………….. What are the contents? –…………………………………………..

15. Posterior mediastinum

16. Paravertebral region

17. Heart Covered by the pericardium Pericardium has two layers –Fibrous pericardium –Serous pericardium Visceral layer covering the heart surface Parietal layer lining the fibrous pericardium

18. Heart… Define the different borders and surfaces of the heart Name the chambers contributing to form the surfaces and borders Describe the blood supply of the heart

19. Borders of the Heart

20. Surfaces of the Heart

21. Chambers of the Heart

22. Orientation of the Heart & the position of coronary vessels