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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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Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

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)

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