Dissection of anterior and lateral regions of neck

Relations of thyroid gland to larynx and trachea, anterior view

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Image #75-5

Dissection of anterior and lateral regions of neck

Relations of thyroid gland to larynx and trachea, anterior view

The isthmus (13) of the thyroid gland has been divided and the left lobe retracted laterally. The fascial attachment (9) of the gland to the upper part of the trachea is shown.

1. Sternohyoid muscle right (cut across)
2. Thyroid cartilage
3. Thyrohyoid muscle right
4. Aberrant muscular slip of cricothyroid muscle
5. Prelaryngeal lymph node
6. Cricothyroid muscles
7. Arch of cricoid cartilage
8. Branch of superior thyroid artery
9. Lateral suspensory ligament of thyroid gland
10. Trachea
11. Right lobe of thyroid gland
12. Internal jugular vein
13. Isthmus of thyroid gland (divided)
14. Inferior thyroid vein right and tributaries
15. Sternohyoid muscle (cut across)
16. Inferior thyroid vein left
17. Thyrohyoid muscle
18. Cricothyroid branch superior thyroid artery
19. Sternothyroid muscle (cut across)
20. Posterior branch superior thyroid artery
21. Anterior branch superior thyroid artery
22. Inferior pharyngeal constrictor muscle (m. cricopharyngeus)
23. Anterior scalene muscle
24. Left lobe of thyroid gland (posteromedial surface)
25. Inferior thyroid artery
26. Common carotid artery
27. Internal jugular vein
28. Phrenic nerve
29. Branch from ansa hypoglossi to sternohyoid muscle
30. Termination of lymphatic trunks in internal jugular vein
31. Sternothyroid muscle and sternohyoid muscle