Dissection of pericardium and heart in situ

Thymus and related structures, close-up view

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Image #116-6

Dissection of pericardium and heart in situ

Thymus and related structures, close-up view

The upper portion of the specimen from the preceding view is shown here to illustrate in more detail the relations of the thymus to nearby mediastinal structures.

1. Superior trunk brachial plexus
2. Phrenic nerve
3. Anterior scalene muscle
4. Upper pointer: Vagus nerve Lower pointer: Recurrent laryngeal nerve
5. Fibrous remnant of cervical portion of thymus
6. Right subclavian artery
7. Mediastinal pleura (cut and reflected)
8. Cardiac plexus
9. Right brachiocephalic vein
10. Internal thoracic artery (displaced posteriorly)
11. Fascia enclosing thymus
12. Pericardiacophrenic artery
13. Superior vena cava
14. Left internal jugular vein
15. Left common carotid artery
16. Vagus nerve
17. Thoracic duct
18. Upper pointer: Subclavian artery Lower pointer: Subclavian vein
19. Rib I
20. Upper pointer: Left brachiocephalic vein Lower pointer: Internal thoracic vein
21. Thymus (right lobe)
22. Thymic branch internal thoracic artery
23. Thymus (left lobe)
24. Superior sternopericardial ligament
25. Pericardium