Dissection of anterior and lateral regions of neck

Larynx, left lateral view

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Image #77-2

Dissection of anterior and lateral regions of neck

Larynx, left lateral view

The origin of the inferior constrictor muscle of the pharynx from the thyroid and cricoid cartilages and from an intervening tendinous arch has been preserved.

1. Anterior belly digastric muscle
2. Body hyoid bone (covered by fibrous tissue)
3. Thyrohyoid muscle (reflected)
4. Anterior jugular vein
5. Thyroid cartilage
6. Fibers of origin of thyrohyoid muscle
7. Cricothyroid branch superior thyroid artery
8. Prelaryngeal lymph node
9. Cricothyroid muscle
10. Upper pointer: Tendinous arch for origin of inferior pharyngeal constrictor muscle Lower pointer: Cricoid cartilage
11. Tracheal cartilage
12. Hypoglossal nerve (XII)
13. Superior laryngeal artery (originates from external carotid artery)
14. Internal branch of superior laryngeal nerve
15. Thyrohyoid branch hypoglossal nerve
16. External carotid artery
17. Thyrohyoid membrane
18. Upper pointer: Superior thyroid artery Lower pointer: External branch of superior laryngeal nerve
19. Internal jugular vein
20. Descending branch hypoglossal nerve
21. Inferior pharyngeal constrictor muscle
22. Sternothyroid muscle (cut across)
23. Anterior branch superior thyroid artery
24. Upper pointer: Esophageal branch inferior thyroid artery Lower pointer: Glandular branch inferior thyroid artery
25. Upper pointer: Inferior pharyngeal constrictor muscle Lower pointer: Inferior laryngeal nerve