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Lane Medical Library

Bassett Collection of Stereoscopic Images of Human Anatomy

Dissection of breast and anterolateral thoracic wall

Vessels and nerves of first and second left intercostal spaces; Internal thoracic vessels; sternal lymph nodes; sternocostal joint

Image #115-6

KEYWORDS: Bones joints cartilage, Lymphatics, Peripheral nervous system, Pleura, Rib cage, Vasculature.

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Dissection of breast and anterolateral thoracic wall
Vessels and nerves of first and second left intercostal spaces; Internal thoracic vessels; sternal lymph nodes; sternocostal joint
The costal part of the parietal pleura has been exposed in the anterior portions of the first and second intercostal spaces.
  1. Sternocleidomastoid muscle (cut off)
  2. Manubrium of sternum
  3. Pectoralis major muscle
  4. Anterior cutaneous branch intercostal nerve I
  5. Sternocostal ligament (pointer crosses sternal angle)
  6. Perforating branch internal thoracic artery
  7. Sternocostal joint III
  8. Sternocostal ligament (a delicate band in this specimen)
  9. Thyroid gland (right lobe)
  10. Trachea
  11. Left pointer: Thymus Right pointer: Common carotid artery
  12. Carotid sheath
  13. Left subclavian artery
  14. Anterior scalene muscle (cut off)
  15. Upper pointer: Internal thoracic artery (pointer near origin) Lower pointer: Costoclavicular ligament (cut off)
  16. Position of sternocostal joint I
  17. Costal pleura
  18. External intercostal muscle
  19. Sternal lymph nodes
  20. Internal intercostal muscle
  21. Intercostal nerve II
  22. Internal thoracic artery and vein
  23. Rib III
  24. Anterior intercostal branch internal thoracic artery
  25. Upper pointer: Costochondral junction Lower pointer: Costal cartilage III (note that a portion of the cartilage has been removed to allow the sternocostal joint to be opened)