1. Sterno-thyro-hyoideus muscle.

2. Stemo-maxillaris muscle.

3. Thyroid gland.

4. Parotid glaud.

5. 5. Trachea.

6. Jugular vein.

7. Carotid artery.

8. Esophagus.

9. Longus colli muscle.

10. Vertebral artery.

11. Superior cervical artery.

12. Anterior dorsal artery.

13. Inferior cervical artery.

14. External thoracic artery.

15. Internal thoracic artery.

16. Axillary artery.

17. Anterior aorta.

18. Posterior aorta.

19. Aorta.

20. Pulmonary artery.

21. Left coronary artery.

22. Pulmonary veins.

23. Posterior vena cava.

24. Heart.

25. Vena azygos.

26. Subcostal artery.

27. Union of retrograde and vertebral arteries.

28. Occipito-muscular artery.