Pectoral region and axilla

Left thoracoacromial vessels

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Image #89-5
Bassett ImageDiagram Image
Legend Image
Pectoral region and axilla
Left thoracoacromial vessels
The pectoralis major muscle has been reflected inferiorly from its origin. The fascia which covered the deep surface of the muscle has been removed except for a narrow band (18). The fascia has also been removed from the pectoralis minor muscle (7) and this muscle divided but not reflected.
1 . External jugular vein
2 . Middle supraclavicular nerves
3 . Sternocleidomastoid muscle
4 . Upper pointer: Clavicular branch of thoracoacromial artery Lower pointer: Axillary lymph node (of subclavian group)
5 . Thoracoacromial vein
6 . Branches of anterior lateral thoracic nerve
7 . Pectoralis minor muscle
8 . Rib II
9 . Body of sternum
10 . Sternocostal origins of pectoralis major muscle (cut off)
11 . Deltoid muscle
12 . Upper pointer: Clavicle Lower pointer: Subclavius muscle
13 . Acromial branch thoracoacromial artery
14 . Anterior lateral thoracic nerve (cut off)
15 . Branch to deltoid of thoracoacromial artery
16 . Anterior lateral thoracic nerve (distal continuation of 14)
17 . Pectoral branch of thoracoacromial artery
18 . Pectoral fascia
19 . Pectoralis major muscle
20 . Cephalic vein